Question

Solve this system of equations using substitution. Put your answer in ordered pair form, (x, y).
x=4y
3x-2y=20

Answer 1

substitute x = 4y in the second equation
3(4y) - 2y = 20
12y - 2y = 20
10y = 20
y = 20/10
y=2

substituting y=2 in first equation x = 4y
x = 4(2)
x = 8

solution is (8,2)