Question

Complete the solution of the equation. find the value of y when x equals 20. -2x+4y=-4

Answer 1

When x=20, y =9.

Explanation:

Rewrite the equation into slope-intercept form.

4y=-4+2x

Divide by 4 to isolate y

y=-1+(2/4)x

y=(1/2)x -1

Then plug in 20 for x.

y=(1/2)(20)-1

y=10-1

y=9