Solving by substitution Quiz
Name: ______________________ Date: __________ Score: ____ / 10
10 questions. Calculator allowed. Show your working. steplyclass.com/algebra-1/solving-by-substitution/quiz/
1
Solve by substitution: 2x + y = 7, x โ 2y = 6Answer: ____________________
2
Solve by substitution: x + 3y = 10, 4x + y = 18Answer: ____________________
3
Solve by substitution: 2x + y = 1, 3x + 2y = 4- A) (x, y) = (โ2, 5)
- B) (โ3, 7)
- C) (x, y) = (5, โ2)
4
Solve by substitution: 5x + y = 9, 2x โ 3y = 7Answer: ____________________
5
Solve by substitution: x โ 2y = โ2, 3x + 2y = 34Answer: ____________________
6
Solve by substitution: 2x โ y = 3, x + 3y = 12Answer: ____________________
7
Solve by substitution: x + 4y = 3, 2x โ 3y = โ16Answer: ____________________
8
Solve by substitution: x โ y = 2, 3x + 2y = 21Answer: ____________________
9
Solve by substitution: a + 2b = 7, 3a โ b = 7- A) (a, b) = (3, 2)
- B) (7, 0)
- C) (a, b) = (2, 3)
10
Solve by substitution: x + y = 3, 2x โ 5y = โ1Answer: ____________________
Answer key
- (x, y) = (4, โ1)
- (x, y) = (4, 2)
- A (x, y) = (โ2, 5)
- (x, y) = (2, โ1)
- (x, y) = (8, 5)
- (x, y) = (3, 3)
- (x, y) = (โ5, 2)
- (x, y) = (5, 3)
- A (a, b) = (3, 2)
- (x, y) = (2, 1)
Every answer solved step by step: steplyclass.com/algebra-1/solving-by-substitution/quiz/answers/