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DeathFightervx
03.07.2021 •
Mathematics
Unit Test Unit Test Active 1 2 3 4 5 6 7 CO Given fix) = 17- x2, what is the average rate of change in f(x) over the interval [1, 5]? -6, -1/2, 1/4, 1
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Ответ:
Step-by-step explanation:
Average rate of change is the same thing as the slope. This is a quadratic so the slope is not something that is constant like it is in a line. Here you have the x coordinates of 1 and 5; each one of these x coordinates has a y coordinate that goes with it. If we draw a line from one of these coordinates to another, that line will have a slope. That is the slope we are trying to find. Thus, we need the y coordinates that go with each of these x coordinates. To do that, plug x into the equation and do the math to find y:
Let's start with x = 1.
f(1) =
so
f(1) = 16 and the coordinate is (1, 16).
f(5) =
so
f(5) = -8 and the coordinate is (5, -8). Now we apply the slope formula:
Ответ:
B
Step-by-step explanation:
Because When you enlarge by 3x you get 1/3