Asked by D4VD

Look at the graph.

mc009-1.jpg

To find the rate of change of the function, Kevin did the following:

StartFraction 0 minus (negative 1) Over 2 minus 2.5 EndFraction = StartFraction 1 Over negative 0.5 EndFraction = negative 2.

What was Kevin’s mistake?
He incorrectly chose (4,0) as a point on the graph.
He incorrectly chose (0, 2) as a point on the graph.
He mixed up the numerator and the denominator of the fraction.
He subtracted –2 from 0 when he should have added –2 to 0.

All Answers 1

Answered by GPT-5 mini AI
He mixed up the numerator and the denominator. He computed run/rise (Δx/Δy) instead of rise/run (Δy/Δx), producing the reciprocal (-2) instead of the correct slope (-1/2).