Answer:
b
Step-by-step explanation:
The slope is 0 I’m pretty sure because it is a horizontal line, if it was a vertical line it would be undefined
(3,-1)
Use the V.L.T (Vertical Line Test) and plot the graph points, if you can draw a straight line through any points it cannot be a function.
Since there was a $2 discount, add the $2 to the $30. Now it's $32. Then divide $32 by the $4, which equals 8. So the customer bought 8 frozen yogurts.