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Mathematics 10 Online
mikewwe13:

https://static.k12.com/nextgen_media/assets/8090340-NG_AL1_SemB_12_UT_01.png The graph shows the function f(x). Which value is closest to the average rate of change from x = 3 to x = 5? A. 0.4 B. 0.6 C. 1.5 D. 2.5

mikewwe13:

@Vocaloid

Mehek:

Do you know how to find the average rate of change?

mikewwe13:

sort of

Mehek:

You use the formula \(\bf\dfrac{y_2-y_1}{x_x-x_1}\)

Mehek:

So the question asks you to find from x = 3 and x = 5 Can you find the y for both from the graph?

mikewwe13:

yes

mikewwe13:

the answer is D ? Correct

Mehek:

I got something different :}

Mehek:

Start by finding the y for x = 3 and x = 5

mikewwe13:

true

mikewwe13:

i've found it

mikewwe13:

leave D, B, and A

Mehek:

Right

Mehek:

So that's C

mikewwe13:

Let f(x)=x^2+1. Let g(x)=(x+2)^2+1. Which statement describes the graph of g(x) with respect to the graph of f(x)? A. It is translated left 2 units. B. It is compressed horizontally by a factor of 2. C. It is compressed vertically by a factor of 2. D. It is translated right 2 units.

Mehek:

Any idea?

mikewwe13:

the answer is B or C or D

mikewwe13:

I'm depending on C

Mehek:

No not compressed That would be if there's a number with the variable such as 2x

mikewwe13:

OK NOT C

mikewwe13:

not C, B,

Mehek:

Why can't it be A

mikewwe13:

i was thinking the same

Mehek:

That's what it should be because (x + 2)^2 is 2 to the left and (x - 2)^2 is right

mikewwe13:

Let ​ f(x)=x^2+5x−8​. What is the average rate of change from x = 2 to x = 6? Enter your answer in the box. __________

Mehek:

Plug 2 and 6 for x and find the y's

mikewwe13:

the answer is 5

mikewwe13:

i might be wrong

mikewwe13:

8

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