Do you need an equation?
y=2x+10
2x represents each hour, 10 represents renting fee
47.50 = 8.50x + 5
42.50 = 8.50x
x = 5
Wylie can rent for 5 hours.
Well, in order to first determine the slope or y-intercept, you must put change the equation to this format: y=mx+b.
m=slope and b=y-interceptI
in order to do that, you must change this equation.
x+3y=9
-x -x
----------
3y=9-x
Then, rewrite it as:
3y=-x+9
_______
3 3
simplify to
y=-x/3 +9
