The label on a gallon of paint says that it will cover from 250 square feet to 450 square feet depending on the surface that is being painted. a painter has 12 gallons of paint on hand. the equation a 12c gives the area a (in square feet) that the 12 gallons of paint will cover if applied at a coverage rate c (in square feet per gallon).

The variable “c” is the independent variable so it is located on the x-axis. 
While the variable “A” is the dependent variable so it is located on the y-axis. 

Using the formula:

A = 12c

At c = 250, A = 3000. 
At c = 450, A = 5400. 

Now draw a point at coordinate (250, 3000), and another point at coordinate (450, 5400). Connect the 2 points with a line.

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.