Slope-intercept form is y = mx + b
m = slope
b = y-intercept
The line has a point at (0, 3). This is the value of our y-intercept because its where the line crosses the y-axis.
So far, our line looks like: y = mx + 3
The next point on our graph is (2, 4). This tells us that our line went over two and up one.
Our slope is 1/2.
The final equation of our line is: y = 1/2x + 3
