Question

The graph shows Nami's speed on a bicycle at different times. Find the slope of the line. Then tell what the slope represents

A. slope=15/2
a slope of 15/2 means Nami’s speed is increasing at a rate of 2 mph every 15 minutes

B. slope=2/15
a slope of 2/15 means Nami’s speed is increasing at a rate of 2 mph every 15 minutes

C. slope= -2/15
a slope of -2/15 means Nami’s speed is decreasing 2 mph every 15 minutes

D. slope= -15/2
a slope of -15/2 means Nami’s speed is decreasing 2 mph every 15 minutes

Answer 1

The answer is C (-2,15)
Here’s your explanation:
To find slope, you take y2-y1 over x2-x1. 4-6=-2, 30-15=15, -2/15.
Also on the picture you included it shows the line going from left to right downwards, meaning it is decreasing. If you look closely to the graph, it’s shows that during that fifteen minutes, Namis speed decreased by 2.
Hope this explanation helps :). Lmk if you need a more in depth explanation.