Question

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

Answer 1

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 = (-9 * 0) - 4`

`y = 0 - 4`

`y = -4` or `(0, -4)`

Second Point:

For `x = -1`

`y = (-9 * -1) - 4`

`y = 9 - 4`

`y = 5`or `(-1, 5)`

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]}