Answer:
The average rate of change is 2, letter a)
Step-by-step explanation:
Given a function y, the average rate of change S of y=f(x) in an interval [tex][x_{s}, x_{f}][/tex] will be given by the following equation:
[tex]S = \frac{f(x_{f}) - f(x_s)}{x_{f} - x_{s}}[/tex].
In our problem, we have that:
[tex]f(x) = 2x + 7[/tex]
[tex]x_{s} = -1[/tex]
[tex]x_{f} = 0[/tex]
So:
[tex]f(x_{s}) = f(-1) = 2(-1) + 7 = -2 + 7 = 5[/tex]
[tex]f(x_{f}) = f(0) = 2(0) + 7 = 0 + 7 = 7[/tex]
The average rate of change is:
[tex]S = \frac{f(x_{f}) - f(x_s)}{x_{f} - x_{s}} = \frac{7-5}{0 -(-1)} = \frac{2}{1} = 1[/tex]
The average rate of change is 2, letter a)
Answer:
wala akong alam jun
Step-by-step explanation:
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