Question

Nina operates a dog walking service. She charges a flat fee of $15 plus $5 per hour. Which equation represents this linear relationship? A. y = 15x — 5 B. y = 15x + 3 C. y = 5x — 15 D. y = 5x + 15

Answer 1

Equation for linear relationship is y=mx+b, where m is slope (rate of change), and b is y-intercept. Y-intercept is where you start of at. Like if I had 20 dollars and started earning 5 dollars each day, my y-intercept would be 20 dollars.

Your rate of change is $5 dollars PER HOUR, and y-intercept is $15 dollars. this is because it is a flat fee. She could walkyour dog for 5 minutes but she still charges 15 dollars.

y=5x+15