What is the slope of the line that contains these points?
15
17
19
21
y
10 2 14
2 14 26
slope:

Griffin ordered a pair of sneakers online. he had a $22 credit that he applied toward the purchase, and then he used a credit card to pay for the rest of the cost. if the shoes cost $58, how much did griffin charge to his credit card when he bought the sneakers?