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ThatCreepyBoy:
For the graphed exponential equation, calculate the average rate of change from x = −4 to x = 4.
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ThatCreepyBoy:
Vocaloid:
rate of change formula is f(x_2) - f(x_1) / (x_2 - x_1) where x_1 = -4 and x_2 = 4
Vocaloid:
so first find the value of f(x) at -4 and at 4
ThatCreepyBoy:
How do i find the value o.o Sorry I get confused easily. Math isn't my strong suit v.v
Vocaloid:
for x = 4, put your eye on the origin and move to the right 4 units
then go down until you touch the graph
then look to the left to find the y-value
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Vocaloid:
|dw:1501516307686:dw|
ThatCreepyBoy:
Ok
ThatCreepyBoy:
I have to go down all the way to the point where the point is right?
Vocaloid:
yes
ThatCreepyBoy:
Oh I got -5 is that right o.o
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Vocaloid:
good, now we do the same with x = -4
ThatCreepyBoy:
Okie :O
ThatCreepyBoy:
Is it 4...
Vocaloid:
|dw:1501516698636:dw|
ThatCreepyBoy:
0
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Vocaloid:
good, so the top part of our formula is
-5 - 0 = -5
the bottom part of our formula is
4 - (-4) = 8
so your answer is -5/8
ThatCreepyBoy:
Okie ^_^, I need to study more in math XD, and by studying I mean learning how to do the math my way :O. Thank you so much!
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