[August SAT Math] These 3 Questions were JUST added

Рет қаралды 27,204

Күн бұрын

What’s going on y’all 🤙
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Name: John
Where did you study - Emory University
What did you major in - Economics & Psychology
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How long have you been teaching - Since 2012
Why do you decide to teach - It was tough for me to figure it all out when I was in high school, and my goal is to make it a lot easier for current students
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Пікірлер: 68

@JohnSAT 2 ай бұрын

25 Concept List - www.admissionhackers.com/25concepts Parabola Concepts for SAT Math Part 1 - kzfaq.info/get/bejne/lb-jp5yHx7i2Z4k.htmlsi=GCDaBHCk3W2-egzb Part 2 - kzfaq.info/get/bejne/n7eHdJiT0K-Xdpc.htmlsi=NmS8Hit8U1UFyUee 8 Practice Questions - kzfaq.info/get/bejne/rdF8etZ_m-DJe2w.htmlsi=v1kvK96VdH8wGrqW

@winterwind-jk6fm 2 ай бұрын

for circle questions like those, you can also just plug the entire equation into desmos and find out if any of the x values in the choices fall within the circle

@JohnSAT 2 ай бұрын

Good point. For clarity, as long as the x-coordinate is one of the x-values of the circumference, it will work. Desmos works (and I admit, it's faster) for this question, but it's valuable to learn the equation method for other SAT questions. Thanks for sharing.

@shlattrt 2 ай бұрын

bro can u show me how to do that i have my exam in 3 days

@ftkritika Ай бұрын

@@shlattrt same omg!! just started to study:)

@starrlessard5696 Ай бұрын

⁠@@shlattrtI do too, good luck! If you haven’t figured it out already you can quite literally just type the exact equation into Desmos and it will graph the circle for you. Then from there the question can be a quick process of elimination. If you haven’t practiced using Desmos I highly recommend using some time you have left to check it out.

@ziyahumbat Ай бұрын

can you explain how did you solve last question?

@mathster4886 2 ай бұрын

For the circle question at 0:59, since they're only asking for the X-Coordinate, you could do -4 (X-coordinate of the center) ± 11 (radius, square root of the right side of the equation), and get that the X-Coordinate must be from -15 to 7, which only answer B fulfills.

@danieldanmola8266 2 ай бұрын

same thing I did here bro . I got B ..but what I watched on.. boom!!. I saw that I was wrong

@JohnSAT 2 ай бұрын

Another valid method! Thanks for sharing.

@jwmathtutoring Ай бұрын

All 3 questions can be done fairly quickly in Desmos although the 3rd is not quite as intuitive. However, the first 2 are very easy and can be done in under 30 secs. No reason to spend 2-4 mins doing all the work by hand esp on #1.

@NtS785 29 күн бұрын

Can u explain how #2 can be put in desmos?

@jwmathtutoring 29 күн бұрын

@@NtS785 Yes. Create a table and type in the 3 highlighted points (-2, 6) (-1, 8) (0, -6). Do a quadratic regression y1~ax1^2 + bx1 + c. It will give you values for a, b, c. Type b*c (or just do it in your head).

@NtS785 29 күн бұрын

@@jwmathtutoring thank uuuu

@khoata9121 Ай бұрын

for the first question (22), it would be much simpler and time-saving to just throw the circle equation into desmos and check for the possible x-intercepts.

@R4PT0R 29 күн бұрын

That's what I did. I just made the equation, x=a, and set a range of values a could be. I then tested each value, and only b fulfilled the answer.

@seanconnell2393 29 күн бұрын

@@R4PT0Rhe circled a and b. Is b the correct answer

@panickdolhpernate Ай бұрын

Ur videos are so helpful, they are thorough and easy to follow!❤ well explained thank u

@Math_with_Mrs.Mautner Ай бұрын

You can also enter the circle equation into desmos and eyeball it or enter x= -16 which lets you create a slider from -16 to 19 with step 1. Drag the slider around to see which x value actually works. It seems that the digital SAT loves to reinforce that an (x,y) ordered pair satisfies the equation that it is a solution for. Love the way you did the circle question and the way you emphasized the logic. ACT used to include these questions often.

@brando3465 2 ай бұрын

For the last question I think using point slope form would be better. If you like only having y on the left then u can simply add over the y1 so u get y = m(x-x1) + y1. It makes it a lot easier bc then u can plug it into desmos as a function without needing to solve for b

@Andrew-Tsegaye 2 ай бұрын

Where have you been John come on we need you... You're our brother this family mustn't be lost ❤ more vids more..

@cierra17 2 ай бұрын

finally.thanks for video

@leouladera Ай бұрын

for the graph equestion you can put the values on desmos and use the slider value until you get it right

@trailclips5834 Ай бұрын

thats what i did its alot faster

@fvehed Ай бұрын

Thank you, Father

@YasminaMuzaffarova Ай бұрын

😂😂

@fvehed Ай бұрын

@@YasminaMuzaffarova hey!! he's more present in my education than my dad LOL

@YasminaMuzaffarova Ай бұрын

@@fvehed same)

@rishikaradakal6579 20 күн бұрын

For the second question, you can use the sum of roots and product of roots formula. Sum of roots is -b/a, and product of roots is c/a, so you just find the sum of the roots which is -2, and the product of the roots which is -3. Then you plug it into the formula. -b/2 has to equal -2, so b is 4. And c/-2 has to equal -3, so c is 6. Then you just multiply to get your answer of -24.

@farukhseyar2253 2 ай бұрын

i love your videos,and i solved all the three

@mudasirbaraki8700 2 ай бұрын

da kerm kada

@abdullah_abisola Ай бұрын

I enjoyed your solution to the 2nd Problem 7:08 I used Vietta's formula Sum of Roots/Solutions = -b/a Product of Roots = c/a Find c and b and then Multiply I would have used ur method. Wanted to Try this formula out

@JohnSAT Ай бұрын

That's a valid method. Good work!

@SanviJaiswal-gz4el 4 күн бұрын

For the second question can you also do it by figuring out the y int from graph for c value and then use a point from the graph say (-2,-6) and then plug it into the equation provided for the b value and then multiply it together(b and c)?

@arjunramdas9469 Ай бұрын

for the last q, couldn't you have just used the inverse of slope from the centre of the circle to the point of tangent instead of finding the entire line ? as both the point of tangent and the new point would need to have the same slope ?

@user-oy3bx2op9o 2 ай бұрын

you are the cutest thank you

@Falaxaa 2 ай бұрын

Good afternoon, John.

@michaelman6700 28 күн бұрын

couldnt you see for the circle question if it is inside out outside the range. since the radius is 11, -4+11=7 and -4-11=-15. so 16, 11, and 19 dont work.

@BeckyDickson-qq5fb 2 ай бұрын

I really miss your video

@richardjohnston3031 2 ай бұрын

Did John just call himself an "average Joe?" 13:27 Yeah, right. 😂😂😂

@CreatorCODM 2 ай бұрын

Show us how we can use Desmond on the tangent question, please!

@carultch Ай бұрын

How are they still allowing Desmos on the SAT's, when AI tools exist?

@jwmathtutoring Ай бұрын

1. Create a table with the 2 given points 2. Linear regression on those points: y1~mx1 + b; this gives you the slope of the radius to the point of tangency, m = =-.83333333333 3. Create a new table with 5, -4 4. Linear regression on that new table (the 1 point) with the slope entered as the opp recriprocal of the value from 2 above: y2~(1/.8333333333)x2 + b 5. Look at which points are on the graph or you can type in the points and see if they fall on the line.

@yashkandra1456 Ай бұрын

i think vertex form is easier for question 2

@smrithi22 Ай бұрын

Hi John... I took a bluebook practice test yesterday and I got 740 in maths (5 questions incorrect). But when I compared my score with a practice test I had taken earlier, I saw that I had gotten a 780 in that test with the same amount of incorrect answers. What do you think could be the reason for this?

@johngabrieldergham5480 Ай бұрын

Hello, it’s because the questions on mdoule 1 are worth more than questions on module 2, of you have before gotten 2 questions wrong on module 2 it will result in 800-2(10)= 780 but now maybe you have got 2 questions wrong on module 1 which can result in 800-2(30)= 740 Hope this helps

@AS-gp7fk Ай бұрын

The test is adaptive. Bomb an easy question, lose more marks. Solve a tough one, win a lot more marks. Some questions do not even carry marks (generally the toughest ones). Bomb those, lose nothing. Try to solve the easiest questions first, and try not to bomb them.

@TooBoooringGamer 2 ай бұрын

Before you start solving the questions, i tried them and I got answers to all of them without even knowing the formulas. With the help of DESMOS i got the answers in 20-40 seconds...

@shlattrt 2 ай бұрын

how can u do the first question on desmos

@TooBoooringGamer 2 ай бұрын

@@shlattrt I typed the equations on the graph and pointed the options on the x-axis like this (-16,0) (-14,0) (11,0) (19,0) and labeled them. then i saw that X-Coordinate must be from -15 to 7 so only -14 can be placed on circle and others are outside of the circle. ngl, I don't remember any formulas but i used my brain and some tricks and Desmos, i got like 700+ in math practice test.

@durutayanc Ай бұрын

@@shlattrtwrite the equation and check the biggest and smallest x value. you’ll understand if you write the equation.

@lucygabriela3071 Ай бұрын

@@shlattrt enter the formula in and test y= as the different answer choices, option B will work because its the only one that hits the circle

@ezzyrappeport8856 Ай бұрын

How did you solve the third question in desmos?

@shy_catchannel982 Ай бұрын

my test is tomorrow 😭😭😭

@AlperG35 2 ай бұрын

bro are you just in youtube or are you selling sat math tutor and if you are a tutor how can i be your student

@JohnSAT 2 ай бұрын

There's an online course. You either score 700+ or get a refund. You can learn more about it here : www.admissionhackers.com/sma

@AlperG35 2 ай бұрын

@@JohnSAT are you guarantee my score are right around 600 right now

@JohnSAT 2 ай бұрын

@@AlperG35 absolutely. we do it all the time.

@johnchoi7783 2 ай бұрын

🔥🔥🔥

@atstudios6938 Ай бұрын

Is the first circle question not -14?

@seaparty1236 29 күн бұрын

it is

@grandpops4934 2 ай бұрын

pov ur running out of content

@mottkey9122 20 күн бұрын

Man, your solutions are so confusing. You just need to start solving based on fundamental concepts. And if you do that, then you easily determine where the center of a circumference is - it is at (-4;19), then you know the radius is 11. Then, imagine the circumference centered at (-4;19) with radius 11. The border x coordinates will be at -15 and 7. You immediately throw choices (A), (C), and (D) away. The only (B) is in this domain of [-15, 7]. But if you want to be extra confident, just plug choice (B) into that equation, and you will find out the corresponding "y" value. Your method of solving these types of problems could mislead and take extra time, which is not a good strategy for an SAT framework.