Question

Solve the system of equations using substitution: -4x + 4y = 8 y = -2x - 10

Answer 1

Answer:

-4x+4y=8....(1)

y=-2x-10

now substitution value of xand yin terms of y(1)and (2)

4x-8-2y=0

2y=8

y=8÷2=4

so x=4y -8=4 (4)-8=8

hence solution of set is (x,y) =(8,4)