Question

The graph of f(x) = 2x + 1 is shown below. Explain how to find the average rate of change between x = 0 and x = 3.

Answer 1

The 'x' is raised as an exponent.

Answer 2

@welshfella @ILovePuppiesLol help

Answer 3

@imqwerty @Mehek14

Answer 4

@nincompoop @sleepyjess please help.

Answer 5

Put 0 for x and find what f(0) is equal to

Do the same for x = 3

Answer 6

ok, and that'll be the answer..? or is that just one step?

Answer 7

f(0) = 2 * 0 + 1 = ?

f(3) = 2 * 3 + 1 = ?

Answer 8

First step

Answer 9

f(0) = 1 and f(3) = 7

Answer 10

Ok now we use the formula to find rate of change

\(\dfrac{y_2-y_1}{x_2-x_1}\)

\(\dfrac{7-1}{3-0}\)

Answer 11

= 6/3 --> 2!

Answer 12

There you go :)

Answer 13

Thanks! I was getting caught up in the formula process. I was putting in 9 instead of 7 :P

Answer 14

Thank you :)

Answer 15

You're welcome ^_^