<h2>Slope-intercept form</h2>
Linear equations are often organized in slope-intercept form:

- <em>(x,y)</em> = a point that falls on the line
- <em>m</em> = the slope of the line
- <em>b</em> = the y-intercept of the line
<h3>Slope (m)</h3>
The slope of a line is equal to its
.
- <em>"Rise"</em> refers to the number of units the line travels up.
- <em>"Run"</em> refers to the number of units the line travels to the right.
Typically, we would solve for the slope by using the following formula:
where two points that fall on the line are
and 
<h3>Y-intercept (b)</h3>
The y-intercept of a line refers to the y-value that occurs when x=0.
On a graph, it is the y-value where the line crosses the y-axis.
<h2>Writing the Equation</h2>
1) Determine the slope of the line (m)

Plug in the two given points, (-17,-4) and (-7,-13):

Therefore, the slope of the line is
. Plug this into
:

2) Determining the y-intercept (b)

Plug in one of the given points and solve for b:

Therefore, the y-intercept of the line is
. Plug this back into our equation:

<h2>Answer</h2>
