Explain how you find a unit rate when given a rate.

To get the unit to equal 1, divide both numbers by the denominator; your answer is the number you get by dividing the numerator by the denominator. Use this method to calculate unit cost, too—you're calculating how much 1 item is worth, after you're given the amount that multiple items cost.

source: google

The correct graph is the second one, with the points being at (-6,0), (2,0) and reaching down to (-2,-8)