Question

x: number of minutes
y: number of steps
what does the equation $y = 15x + 30$ tell you?
hassan starts at the 15th step and climbs up ? ste e.
options:
bottom
15th step
30th step

Explanation:

The equation $y = 15x + 30$ follows the linear form $y=mx+b$, where $b$ is the starting value (when $x=0$, meaning at 0 minutes) and $m$ is the rate of change. Here, $b=30$ is the starting step count, and $m=15$ is the number of steps climbed per minute. The dropdown shows an incorrect selection; the correct starting point is the 30th step, and the rate is 15 steps per minute.

Answer:

The equation $y = 15x + 30$ means Hassan starts at the 30th step and climbs up 15 steps every minute.

• Correct starting step: 30th step
• Steps per minute climbed: 15