We will be using the Point Slope formula which is 
The information we are given is that m = -4 and the point is (2,-5), so we can input it into the equation.

This simplifies into 
Then we can subtract 5 from each side to get the answer:

If the diameter is at (9,4) and (-3,-2), then the center of the circle is the midpoint of that segment.
and since we know that the radius of a circle is half of the diameter, whatever long that diameter segment is, the radius is half that.


.78 cents for one quart <--- Answer
First you need to find how much is it per gallon
$37.20/12= $3.10
Now we need to find out how many quarts are in a gallon. Which is 4 quarts per 1 gallon
Now that we know this you need to divide the chost of one gallon by 4(# of quarts in one gallon)
$3.10/4= .78 cents
Elimination is the right answer