Question

8. Solve the system of

equations using substitution.

y= -1/4x

× +2y=4

Answer 1

(4.5 , -1.125)

Explanation:

y= -1/4x

× +2y=4

step 1. substitute y = -1/4x into the second equation.

Rearranging × + 2y = 4 we get x = 4 - 2y

now substitute

x = 4 + 2(1/4)

x = 4 + 0.5

x = 4.5

step 2. plug in the value of x into the first equation and solve for y.

y= -1/4x

y= -1/4(4.5)

y = -1.125

tadah!