Question

Points A and B lie on the graph of the equation
y = 7x.

What are the y-coordinates for each point?

Point A: (−2, ) Point B: (4, )

Cora is graphing the equation . She has placed a point on the origin, and uses the slope to find 2 more points.

Which points does Cora plot on her graph?

Choose exactly two answers that are correct.

A.
(−1, −12)

B.
(−12, −1)

C.
(1, 12)

D.
(12, 1)
What is the equation of the graphed line?
Hint: Determine the slope of the line.

y = x

Answer 1

this is the graph for the last one http://static.k12.com/calms_media/media/1503000_1503500/1503204/2/62a6c66e5dc886fe671c55450260437b66e1d8da/MS_IMC-140516-1000014.jpg

Answer 2

to find the y coordinates for the first two, plug the given x values into the given equation:
y=7(-2) and y=7(4)

Answer 3

so is 7,-2 and 7, 4 the answer?

Answer 4

you have to multiply those numbers... I'm sorry, I should hav specified that I was just plugging the two x values in to the equation and there is an implied multiplication there... so the x value for the first one is -2, you plug that into the equation and multiply it by 7... which equals -14. so the final answer is (-2, -14)

Answer 5

the answer to the second one is (4, 28)

Answer 6

can you help me on any other question?

Answer 7

do the multiple choice answers go with the question about Cora?

Answer 8

ok

Answer 9

I'm sorry?

Answer 10

what do you mean?

Answer 11

does the next question have four answers to choose from? Or are those their own question?

Answer 12

Ya it has multiple choice but there are 2 correct answers

Answer 13

okay. The way I would do that one is by taking the answers and seeing which of them are actually on the graph

Answer 14

?

Answer 15

so if you plug that in, the answer is -7. so A is not a correct answer.

Answer 16

Do you understand what I did?

Answer 17

sorry im back

Answer 18

ok ya but there is a second answer 2

Answer 19

yeah. do you think you could try it yourself?

Answer 20

not really

Answer 21

I just want to know if I am actually helping at all, I dont' mean to be rude....

Answer 22

*don't

Answer 23

and okay

Answer 24

but it might be a bit... I'm also doing my own math homework, so....

Answer 25

No your the only one whose been helping me on this and its a ton of help

Answer 26

lol

Answer 27

ok

Answer 28

Okay! Thank you!

Answer 29

Wait a second, I'm sorry, but are the first and the second question related or separate? (is the equation in the first given in the second?)

Answer 30

Seperate

Answer 31

Okay I'm sorry those answers I gave aren't correct...

Answer 32

wait what do you mean are the seperate?

Answer 33

Thery don't give you an equation in the second question.... they only give you the four answers and that the origin is on the line?

Answer 34

oh sorry this got left out the equation is y=12x sorry

Answer 35

Okay that makes things a lot easier

Answer 36

If you dont mind I do need help with another question to thats not up there!?

Answer 37

The table shows the amount of money a plumber charges for different numbers of hours that he works. The plumber graphed this information.

What is the slope of the line that represents this situation?

Hours worked 2 4 7 9
Amount charged ($) 96 192 336 432

Answer 38

so, just like before, plug the x values into the given equation: y=12x
A: (-1,-12)
so y=12*(-1)=-12
B: (-12, -1)
so y=12*(-12)=-144
C and D have the same answers as A and B respectively, except there aren't any negatives
and Im sorry but I have to get off now so I can't help you with that last problem
Sorry!