Answer :
Answer:
Step-by-step explanation:
Substitute 5x+4 for y in the second equation.
5x+4 = -3x-12
add 3x to both sides to have x on one side
8x + 4 = -12
substract 4 on both sides to isolate the x.
8x=-16
x=-2
solve for y by putting the value of x in either equation.
y=5(-2) + 4
y=-6
or
y=-3(-2)-12
y=6-12
y=-6
ANSWER (-2,-6)
check answer by putting x and y values in either equation to make sure they equal
Y=5x + 4
-6=5(-2)+4
-6=-10+4
-6=-6