Explanation:
1. The y-intercept is the value for y when x = 0.
When x = 0, y equals 7.
Represented as:
(0, 7)
2. How to find the Slope?
Find 2 points on the graph then use the slope formula.

m = slope
2 points:
(0, 7)
(2, 3)
Substitute the points into the formula:

Subtract:

Simplify:

The slope is -2.
Forming an equation:
Use the slope-intercept format.

m = slope
b = y-intercept
Substitute 7 for b, and -2 for m.
