Question

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)
Responses

miles traveled
miles traveled

speed traveled
speed traveled

direction traveled
direction traveled

time in hours

Answers

GPT-4o mini
In the function \( y = 80x + 2 \), \( x \) represents a quantity that is used to calculate the value of \( y \). Given that this function models Carli’s road trip along with her speed in miles per hour and includes stops, the variable \( x \) most appropriately represents **time in hours**.

Thus, the quantity that describes the x-axis is **time in hours**.