# How do you find the slope and intercept for y=-9x?

Aug 29, 2016

slope = - 9, y-intercept = 0

#### Explanation:

The equation of a line in $\textcolor{b l u e}{\text{slope-intercept form}}$ is

$\textcolor{red}{| \overline{\underline{\textcolor{w h i t e}{\frac{a}{a}} \textcolor{b l a c k}{y = m x + b} \textcolor{w h i t e}{\frac{a}{a}} |}}}$
where m represents the slope and b, the y-intercept.

The advantage to having the equation in this form, is that m and b may be extracted 'easily'.

The equation here is in this form.

That is : $y = - 9 x \Rightarrow y = - 9 x + 0$

and by comparison with the standard equation.

Hence: slope = - 9 and y-intercept = 0
graph{-9x [-10, 10, -5, 5]}