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bagirrra123 [75]
3 years ago
8

What is the rate of change for the linear relationship modeled in the table?

Mathematics
2 answers:
wolverine [178]3 years ago
5 0
Since the data represented by the table are linear, then the average rate of change is given by the slope of the line.
 We have then:
 m = (y2-y1) / (x2-x1)

 Substituting values we have:
 m = (9-10) / (1 - (- 1))

 Rewriting we have:
 m = (-1) / (1 + 1)

 m = -1/2
 Answer:
 
The average rate of change is given by:
 
A) -1/2
elena55 [62]3 years ago
4 0
Take any 2 points and find the slope of the line connecting them:

<span>1 9
3 8
                            9-8          1
slope m is   m = ------- = -------- = -1/2
                            1-3          -2</span>
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Answer:

The equation of the line will be:

y=\frac{5}{3}x-1

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\left(x_1,\:y_1\right)=\left(3,\:4\right),\:\left(x_2,\:y_2\right)=\left(12,\:19\right)

\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

m=\frac{19-4}{12-3}

m=\frac{5}{3}

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y-y_1=m\left(x-x_1\right)

substituting the values m = 5/9 and the point (3, 4)

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