Question

Solve this system of equations: y = 7; y = -2x+1 *

Answer 1

x = -3

Explanation:

y = 7

y = -2x+1

substitute for y

7 = -2x+1

subtract 1 from each side

6 = -2x

divide both sides by -2

6/-2 = x

x = -3

Answer 2

x = -3

y = 7

Explanation:

y = -2x + 1

7 = -2x + 1

-1 -1

6 = -2x

divide by -2

x = -3