Question

The system of linear equations -2y+ y = 8 and -3x -y=7 is graphed below. What is the solution to the system of equations?

Answer 1

x=1/3 y= -8

step explanation:

-2y+y= 8 then -y=8 y= -8

-3x-(-8) =7

-3x +8 =7

-3x=-1

x=1/3 y= -8

Answer 2

x= 1/3

y = -8

Explanation:

-2y+ y = 8 equation 1

-3x -y =7 equation 2

using equation 1 we have:

-2y+ y = 8

-y = 8

y = -8 equation 3

using equation 3 in equation 2 we have:

-3x -y=7

-3x -(-8)=7

-3x +8 =7

-3x = 7-8

-3x = -1

x= 1/3