Question

Which shows -5x + 10y = 80 in slope-intercept form?

Options:

A. y = -2x + 8


B. y = 2x + 8


C. y = -1/2x + 8


D. y = 1/2x + 8

Answer 1

start by dividing both sides by 10

Answer 2

what is -5x/10?

Answer 3

-0.5

Answer 4

not quite

Answer 5

don't forget the x

Answer 6

oh -0.5x

Answer 7

good! how do we write that as a fraction?

Answer 8

1/2x

Answer 9

good

what about 10y/10?

Answer 10

1y

Answer 11

good! we can also re-write 1y as y

Answer 12

80/10 = ?

Answer 13

8

Answer 14

good

right now we have

-(1/2)x + y = 8

we can add (1/2)x to both sides to get

y = (1/2)x + 8

which answer choice matches?

Answer 15

D. y=(1/2)x + 8

Answer 16

good job!

Answer 17

ahhh thank you @Vocaloid