Question

Choose the system of equations that matches the following graph: (5 points)
a
3x + 7y = 7
5x + 7y = −63

b
3x + 7y = 7
5x − 7y = −63

c
3x − 7y = 7
5x + 7y = −63

d
3x − 7y = 7
5x − 7y = −63

Answer 1

Can you please upload the following graph so we can compare the system of equations? Thanks

Answer 2

https://cdn.flvsgl.com/assessment_images/4589-images/0509_g10_25.gif

Answer 3

does that work

Answer 4

Yes it does. Thanks. Now for the problem, are you able to use a graphing calculator? It will speed things up. Try using this one: https://www.desmos.com/calculator

Answer 5

i cant

Answer 6

i dont know how to use that

Answer 7

You simply just type in the equation you have into the text box on the left hand side. Here I'll show you a picture.

Answer 8

oh

Answer 9

i cant get it

Answer 10

Wdym you can't get it?

Answer 11

like i dont know how to do it

Answer 12

Ok I will just explain how to do this problem without the calculator then. Understood?

Answer 13

okay

Answer 14

are you there

Answer 15

For A and B for the equation 3x+7y=7, we have to convert this to standard form y=mx+b. To do this, we simply just isolate y by itself on one side. So, we subtract the 3x from the left side and put it on the right side making it 7y=-3x+7. We are almost done. Now we just need to divide everything in the equation by 7 to get rid of the 7 by the y. This makes the equation y=-3/7x + 1. Understand?

Answer 16

yes

Answer 17

Btw, we have to convert each of these equations on the problem into standard form so we can graph them without a calculator. Once we do so, we can manually graph each equation to find your answer.

Answer 18

yeah

Answer 19

i think is c

Answer 20

hello

Answer 21

Nope not quite, the equation 3x − 7y = 7 is negative and according to the graph in the problem that you compare it to, the red line is positive, while in C, 3x − 7y = 7 is negative.