Question

A student is trying to solve the system of two equations given below: Equation P: y + z = 6 Equation Q: 8y + 7z = 1 Which of the following is a possible step used in eliminating the y-term?

A. (y + z = 6) ⋅ −8
B. (y + z = 6) ⋅ 7
C. (8y + 7z = 1) ⋅ 7
D. (8y + 7z = 1) ⋅ 8

Answer 1

a. y + z = 6 * -8

Explanation:

i took the test

Answer 2

P: y + z = 6
Q: 8y + 7z = 1

A. This makes y = -8Y which will eliminate the "y"'s when the equations are added.