Question

Use the substitution method to solve each linear system. X - 2y = 7, y = - X + 1

Answer 1

x = 3

y = -2

Explanation:

x - 2y = 7

y = -x + 1

x - 2y = 7

x - 2 ( -x + 1 ) = 7

3x - 2 = 7

3x = 9

x = 3

y = -x + 1

y = -3 + 1

y = -2