Question

Y = - 2x + 1
2x - 2y = 4
Solve systems of equations by substitutions

Answer 1

x= 1

y= -1

Explanation:

y=-2x+1

2x-2y=4

substitute for y

2x-2(-2x+1)=4

reduce

2x+4x-2=4

6x=6

x=1

y= -2(1)+1

y= -1