Write the slope-intercept form of the equation for the line.

let's use those two endpoints in the line of (-5 , 2) and (5 , -1)

y=-(3/10)x+(1/2)

Step-by-step explanation:

Let

A(-5,2),B(5,-1)

step 1

Find the slope m

m=(-1-2)/(5+5)

m=-3/10

step 2

Find the equation of the line into slope point form

we have

m=-3/10

point A(-5,2)

y-2=(-3/10)(x+5) > equation of the line into slope point form

Convert to slope intercept form > isolate the variable y

y=-(3/10)x-(15/10)+2

y=-(3/10)x+(5/10)

simplify

y=-(3/10)x+(1/2)

i think the amount would be $140.62

they used 313 gallons of paint