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Algebra 16 Online
OpenStudy (anonymous):

What is the average rate of change from x = −3 to x = 5? −1 0 1 8

OpenStudy (anonymous):

OpenStudy (anonymous):

@nincompoop

OpenStudy (anonymous):

@acxbox22

OpenStudy (abdullahm):

What are the y-values when x=-3 and x=5

OpenStudy (anonymous):

um i dont knew how to find those

OpenStudy (abdullahm):

So, go to your graph and see when x=3, what the y-value is on the line.

OpenStudy (anonymous):

y is -1?

OpenStudy (abdullahm):

Correct, y=-1 for both x=-3 and x=5

OpenStudy (abdullahm):

Do you know the slope formula?

OpenStudy (acxbox22):

y2-y1 average rate of change= ----- x2-x1

OpenStudy (abdullahm):

Or, do you know the property of the slopes of horizontal lines?

OpenStudy (acxbox22):

or like said, slope average rate of change between two points is just the slope of the secant line going through the points

OpenStudy (anonymous):

so is it -1-(-3) 5-(-1)

OpenStudy (abdullahm):

No, it isn't. Make sure to put the points in the correct place in the formula.

OpenStudy (acxbox22):

no, y2 is -1 and y1 is -1

OpenStudy (anonymous):

-1-(-1) -3-5

OpenStudy (acxbox22):

yes now what is it?

OpenStudy (abdullahm):

Note: x/ 0 = undefined 0/x = 0

OpenStudy (anonymous):

y=0 x=-8

OpenStudy (abdullahm):

And 0/-8 =?

OpenStudy (acxbox22):

so 0/-8 which is equal to?

OpenStudy (anonymous):

so its 0

OpenStudy (abdullahm):

Correct

OpenStudy (anonymous):

is that the answer?

OpenStudy (abdullahm):

Yes.

OpenStudy (anonymous):

thank you both of you

OpenStudy (abdullahm):

Anytime :)

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