A graph of the function y=80x+2 models Carli’s road trip, with her speed measured in miles per hour. The graph includes the two hours of stops she’ll make. Using this information, define which quantity describes the x-axis.(1 point)

Question

Responses

speed traveled
speed traveled

time in hours
time in hours

direction traveled
direction traveled

miles traveled
miles traveled

Answer 1

The quantity that describes the x-axis in this graph is time in hours. This is because the equation y = 80x + 2 represents Carli's speed (y) at different points in time (x), with x being measured in hours.