Well you gotta find out what x means
Answer:
y = 6/5x - 24/5
Step-by-step explanation:
The two points we are given are (4, 0) and (9, 6). First, find the slope.
m = 6 - 0/9 - 4 = 6/5
Next, insert the values into the point-slope form formula. I'll use (4, 0) as the coordinates.
y - 0 = 6/5(x - 4)
y = 6/5x - 24/5
Set up a proportion:
8 gallons 1 gallon
------------------ = -------------------
25.60 dollars x dollars
Then, cross multiply
8x= 25.60
x = 3.20 dollars