Question

Which of the following is the y coordinate of the solution of the system of

equations y = - 1/2 x+8 and y=x+ 2?

Answer 1

Answer: The whole solution is (4,6) so the y coordinate of the solution is 6.

Explanation:

y = -1/2x + 8 and y= x +2

Using both equations substitute one of the equation into another an solve for x.

-1/2x + 8 = x + 2

-8 -8

-1/2x = x -6

-x -x

-1.5x = -6

x = 4

Since the value of x is 4 input in into the equation and solve for y.

y = -1/2(4) + 8

y = -2 + 8

y = 6

Answer 2

The y coordinate is 6 and the x coordinate is 4

I hope this helps!