# How do you write an equation for the line that passes through (0, 9) and whose slope is 4?

Mar 24, 2018

$y = 4 x + 9$

#### Explanation:

$\text{the equation of a line in "color(blue)"slope-intercept form}$ is.

•color(white)(x)y=mx+b

$\text{where m is the slope and b the y-intercept}$

$\text{here "m=4" and } \left(0 , 9\right) \to b = 9$

$\Rightarrow y = 4 x + 9 \leftarrow \textcolor{red}{\text{is the equation of the line}}$