Here is a video showing the full solutions with explanations for each question of a grade 10 practice exam. Please consider subscribing if this was helpful for you.
Link to the practice exam:
www.jensenmath.ca/math10-review
0:00 questions 1-8 multiple choice
5:36 question 9 substitution
7:24 question 10 elimination
8:52 question 11 midpoint
9:43 question 12 circles
11:36 question 13 length of a line
13:39 question 14 median of a triangle
16:23 question 15 right bisector
18:39 question 16 properties of vertex form quadratic
22:52 question 17 transformation of a quadratic
24:00 question 18 solve a quadratic equation by factoring
27:00 question 19 quadratic formula
28:32 question 20 factored form equation of a quadratic
30:41 question 21 x-int and vertex from standard form
34:12 question 22 SOHCAHTOA for sides
36:09 question 23 SOHCAHTOA for angles
37:46 question 24 Sine Law and Cosine Law
41:53 question 25 linear system application
44:50 question 26 trigonometry application
46:29 question 27 quadratic appliication