Sammy is classifying quadrilateral EFGH. How can she use coordinate geometry to determine whether EFGH is a parallelogram?

if slope of EH is equal to slope of FG ,then it is quadrilateral

C

Step-by-step explanation:

She (or he) can use the slope formula to find if the opposite sides have equal slope because in a parallelogram the opposites sides are parallel which means they have an equal slope.

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i