Question

Graphs are not my strong suit, is anyone on here able to help me? :) I'll answer yours in return!!!!

Choose the system of equations with the graphical solution shown below:





5x - y = 612x + 6y = 6

5x + y = -612x + 6y = 6

5x - y = 612x - 6y = 6

5x + y = -612x - 6y = -6

Answer 1

This is the graph:

Answer 2

the graphs meets at (1,-1) right ?

Answer 3

Yes sir

Answer 4

so lets see which one of the sets satisfies (1,-1)

Answer 5

Either B or D

Answer 6

A satisfies
5x - y = 6
12x + 6y = 6

B not :
5x + y = -6
this is not correct : 5 - (-1) = -6
12x + 6y = 6

D not: for the same reason

5x + y = -6
12x - 6y = -6

Answer 7

for A :
5 * 1 - (-1) = 6 correct
12 * 1 + 6 * (-1) = 6 correct

Answer 8

You are VERY good at this....

Answer 9

you just have to plug in the values carefully and do the math slowly so you want do mistakes with the signs

Answer 10

Do you mind if I write this problem down so i can learn it and refer back to it?

Answer 11

do it

Answer 12

I have a tendency of being thrown off by signs

Answer 13

Thank you so much @Coolsector

Answer 14

yw:)

Answer 15

so you do it here ?