Answer:
(8,130)
Step-by-step explanation:
y=10x+50
y=5x+90
They are both equal to each to y, so they are equal to each other.
10x+50=5x+90
Now, you want to get the variable on one side, so you subtract 50 from both sides, then 5x from both sides;leaving you with:
5x=40
Divide by 5 on both sides
x=8
Now, that you have x, plug it into any equation of y. For example...
y=10(8)+50
y=80+50
y=130
