Which function has a constant rate of change of -2? O y - 1 = -2(x + 2) O (-2,-7) (-1,-3) (0,1) (1,5) (2,9) 2x - 4y = 8 O y = 3x - 2

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
ChapterP: Prerequisites
SectionP.6: Analyzing Graphs Of Functions
Problem 6ECP: Find the average rates of change of f(x)=x2+2x (a) from x1=3 to x2=2 and (b) from x1=2 to x2=0.
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I’m not really good at finding what the consistent rate of numbers so I’m not sure how to find which function has a constant rate of -2.
Which function has a constant rate of
change of -2? *
O y - 1 = -2(x + 2)
O (-2,-7) (-1,-3) (0,1) (1,5) (2,9)
O 2x - 4y = 8
O y = 3x - 2
Transcribed Image Text:Which function has a constant rate of change of -2? * O y - 1 = -2(x + 2) O (-2,-7) (-1,-3) (0,1) (1,5) (2,9) O 2x - 4y = 8 O y = 3x - 2
Expert Solution
Step 1

Consider the equation,

y-1=-2x+2

To calculate the rate of change of the function,

Differentiate the function with respect to “x” then,

ddxy-0=-21+0dydx=-21dydx=-2

 

Step 2

Consider the points,

 

(-2, -7), (-1, -3), (0, 1), (1, 5), (2, 9)

 

To calculate the rate of change between any two points,

 

Calculate the rate of change between the points (-2, -7), (-1, -3)

Rateofchange=y2-y1x2-x1=-3--7-1--2=41=4-2

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