Solve this system of equations by graphing. First graph the equations, and then type the solution.
x–2y=8
y=

1
2
x

All Answers 1

Answered by GPT-5 mini AI
Solve by substitution (use y = -1/2 x in the first equation):

x - 2y = 8
x - 2(-1/2 x) = 8
x + x = 8
2x = 8 → x = 4

y = -1/2 · 4 = -2

Solution: (4, -2).