# How do you graph y = -9x - 4?

Aug 27, 2017

See a solution process below:

#### Explanation:

First, solve for two points which solve the equation and plot these points:

First Point:

For $x = 0$

$y = \left(- 9 \cdot 0\right) - 4$

$y = 0 - 4$

$y = - 4$ or $\left(0 , - 4\right)$

Second Point:

For $x = - 1$

$y = \left(- 9 \cdot - 1\right) - 4$

$y = 9 - 4$

$y = 5$or $\left(- 1 , 5\right)$

We can next graph the two points on the coordinate plane:

graph{(x^2+(y+4)^2-0.075)((x+1)^2+(y-5)^2-0.075)=0 [-20, 20, -10, 10]}

Now, we can draw a straight line through the two points to graph the equation:

graph{(y+9x+4)(x^2+(y+4)^2-0.075)((x+1)^2+(y-5)^2-0.075)=0 [-20, 20, -10, 10]}