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anyanavicka [17]
3 years ago
5

Please could u help me !!!!

Mathematics
1 answer:
Paul [167]3 years ago
8 0
Answer: g(x) which is the middle graph

=======================================

Explanation:

Average rate of change is the same as slope through the two endpoints of the interval

For f(x), (1,-2) and (3,6) are on the graph

Slope
m = (y2-y1)/(x2-x1)
m = (6-(-2))/(3-1)
m = (6+2)/(3-1)
m = 8/2
m = 4
So we can rule out f(x) because we want the slope to be 3, not 4.

-------------------------
Let's try g(x)

Based on the given curve, we can see that (1,-2) and (3,4) are on the g(x) graph.

Slope
m = (y2-y1)/(x2-x1)
m = (4-(-2))/(3-1)
m = (4+2)/(3-1)
m = 6/2
m = 3
We found the answer, but let's check h(x) just for the sake of completeness
-------------------------

If we plug x = 1 and x = 3 into h(x), we get y = 1/2 and y = 19/8 respectively
So the two points (1,1/2) and (3,19/8) are on the graph

Slope
m = (y2-y1)/(x2-x1)
m = (19/8-1/2)/(3-1)
m = (19/8-4/8)/(3-1)
m = (15/8)/(2)
m = (15/8)*(1/2)
m = 15/16
which is not equal to 3, so we can rule out h(x)


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