Question

Write this equation in slope-intercept form, and then find the slope and y-intercept.
-y=3x

Answer 1

slope-intercept form = y=mx+c

Answer 2

Where m = slope c=y intercept

Answer 3

y=-3x+0 Slope =-3 intercept =0

Answer 4

-y=3x

Multiply by -1

y = -3x + 0

y inetrcept = 0

slop = -3

Answer 5

y=mx+b
m is the slope, b is the y-intercept

-y=3x → y=-3x + 0
slope, m, is -3. y-intercept, b, is 0

In order to find the x-intercept, you must plug in 0 for y
0=-3x → x=0/-3 → x=0

Answer 6

So how exactly did you get to the slope and y-intercept?

Answer 7

I'm confused..

Answer 8

This form is called slope-intercept form because just by looking at the equation you can immediately tell what the slope and the y-intercept are

m= slope
b= y-intercept (another way to find the y-intercept is to plug in 0 for x)

Answer 9

Okay...So how did you get -3?

Answer 10

-y=3x

You can divide both sides by -
-y/-= y
3x/- = -3x

y=-3x

Answer 11

Oh...Thanks! :D