Answer:
{x,y}={-2,4}d
Step-by-step explanation:
Solve equation [2] for the variable y
[2] y = -2x
// Plug this in for variable y in equation [1]
[1] 8x - 3•(-2x) = -28
[1] 14x = -28
// Solve equation [1] for the variable x
[1] 14x = - 28
[1] x = - 2
// By now we know this much :
x = -2
y = -2x
// Use the x value to solve for y
y = -2(-2) = 4
