Question

Solve using substitution: -y − 5x = -7 2y − 2x = 14

Answer 1

get y by itself, and substitute into the other equation

Answer 2

do you understand what im talking about?

Answer 3

mm a little. so add y?

Answer 4

add y and add 7 to both sides of the first equation

Answer 5

so it has no solution?

Answer 6

how did you get that?

Answer 7

its multiple choice

Answer 8

you end up with y=-5x+7 correct

Answer 9

Infinitely many solutions

No solution

(7/5, 14)

(0, 7)

Answer 10

lets work out the problem
so take that and substitute it into the second equation to get 2(-5x+7) − 2x = 14

Answer 11

distribute to get -10x+14-2x=14
-12x=0

Answer 12

so your x value is 0 now plug 0 into x for the first equation to find y

Answer 13

so y=-5(0)+7
y coordinate is 7

Answer 14

giving you (0,7)

Answer 15

ohhh

Answer 16

thankss.!!! :)

Answer 17

np you understand?

Answer 18

yeah i get this. i have an answer for the next one but idk if its right..can you help me with my next one

Answer 19

sure

Answer 20

ok

Answer 21

Solve using substitution:

-2x − y + 1 = 0

2x = -13 − 3y

Answer 22

ok so lets get y by itself again

Answer 23

add

Answer 24

i got 4,-7

Answer 25

2(x)=-13-3(-2x+1)
2x=-13+6x-3
4x=16
x=4

Answer 26

y=-2(4)+1
y=-8+1
y=-7

Answer 27

(4,-7)

Answer 28

thanks

Answer 29

np glad to help

Answer 30

:)