what is the slope intercept form of y+x=0?

Question

I need to know m and b

Answer 1

Hi Kynzie;

y+x=0

Slope-intercept form is y=mx+b.

m is the slope.

b is the y-intercept, the value of y when x=0.

y+x=0

Let's subtract x from both sides...

-x+y+x=0-x

y=-x+0

We do not need the zero, except to highlight the fact that the y-intercept is 0.

The slope is -1.

y=-x

Answer 2

 Given Y + x = 0   

    To find Y intercept , and slope you need to make it in the form of  Y = mx +b

 

     in this case:

                Y + X = 0

       becomes  Y = -x

 

            slope coefficient of  X , m = -1

 

             and b = 0

     The line goes through origin.