Answer:
The equation for the following graph:

Step-by-step explanation:
- You first need to find the slope by using the <u>slope formula</u>:

(where  is the first point and
 is the first point and  is the second point)
 is the second point)
-Use the given points  and
 and  from the graph for the formula:
 from the graph for the formula:

Then, you solve:


After you have found the slope, use the slope  and the first point
 and the first point  for the <u>point-slope formula:</u>
 for the <u>point-slope formula:</u>

<u>(</u>where  is the slope and
 is the slope and  is the first point)
 is the first point)

Then, you solve:




So, the equation for the following graph is  .
 .