Question

The slope of the line below is -1. Write the point slope equation of the line using the coordinates of the labeled point (7,-7)
heres what I got Y=-1x+0
is this correct ?

Answer 1

You have the correct equation in `slope-intercept form`.
They want it `point-slope form` though :)\[\large\rm y-y_1=m(x-x_1)\]And we were given that: \(\large\rm (x_1,y_1)=(7,-7)\) and \(\large\rm m=-1\)

Answer 2

oooh whoops im not the best in math lol

Answer 3

Err maybe it makes more sense to write our point-slope form in this way,\[\large\rm m(x-x_1)=y-y_1\]easier to plug in the stuff that way.

Answer 4

That's ok :) Just keep eating cookies, you'll succeed.

Answer 5

\[\large\rm (\color{purple}{x_1},\color{royalblue}{y_1})=(\color{purple}{7},\color{royalblue}{-7})\]\[\large\rm \color{orangered}{m=-1}\]So just plug everything in, understand?\[\large\rm \color{orangered}{m}(x-\color{purple}{x_1})=y-\color{royalblue}{y_1}\]

Answer 6

so I got y=-1x thats not right is it ?