What is the solution to the system of equations?

y=1.5x-4

y=-x

Y = 1.5x - 4

y = - x

since y = - x, we will sub - x in for y in the other equation

-x = 1.5x - 4 ... subtract 1.5x from both sides

-x - 1.5x = - 4

-2.5x = - 4 ... divide both sides by - 2.5

x = - 4/-2.5

x = 1.6

y = - x

y = - 1.6

solution is (1.6, - 1.6)