Question

Which of the following statements best describes the effect of replacing the graph of y = f(x) with the graph of y = f(x) + 9? (3 points)

Answer 1

The graph of y = f(x) will shift up 9 units.
The graph of y = f(x) will shift down 9 units.
The graph of y = f(x) will shift left 9 units.
The graph of y = f(x) will shift right 9 units.

Answer 2

Someone please help me, i am so lost

Answer 3

Hey, when you add 9 that's adding 9 to the y intercept so you do you have idea what that would do? (I know the answer I want to try to make sure you understand it :))

Answer 4

Shift up 9 units?

Answer 5

Yes, Amazing job!

Answer 6

Yaye thank you!

Answer 7

Could you help me with one more please?

Answer 8

The functions f(x) and g(x) are described below:
f(x) = 3x - 7
g(x) = 3x + 8

The graph of g(x) is obtained by shifting up the graph of f(x) by _____ units. (3 points)

Answer 9

Yes I can, now this is another one with the y intercept so how does the -7 change to be 8? And fyi I gave you a medal because I helped you answer your own question :)

Answer 10

Would you subract -7 from 8?

Answer 11

yes :)

Answer 12

so would the answer be -15?

Answer 13

wait im a little confused

Answer 14

Sooooo close you just messed up on the addition, when you subtract a negative number it adds the negative number. Here is an example 3 - -4= 7

Answer 15

i did -7 - 8 and i got -15

Answer 16

Think of it this way, how many numbers do you need to get from -7 to 8?

Answer 17

15

Answer 18

That's your answer :)

Answer 19

Oh haha thanks :)

Answer 20

oh thats right because you cant move negative units away from something XD

Answer 21

No problem :)

Answer 22

An airplane ascends at the rate of 40 feet per minute. The function below shows the height of the airplane from the ground f(t) after t minutes:
f(t) = 40t + 520

Which statement best describes the y-intercept of the graph of the function? (3 points)

Answer 23

one more??? pweez

Answer 24

It is equal to 520 and represents the height of the airplane above the ground, in feet, after 1 minute.
It is equal to 560 and represents the height of the airplane above the ground, in feet, after 1 minute.
It is equal to 40 and represents the height of the airplane above the ground, in feet, before it starts ascending.
It is equal to 520 and represents the height of the airplane above the ground, in feet, before it starts ascending.