f(x) = 3x + 1
Let y = f(x). We have y = 3x + 1.
This is known as the slope-intercept form (i.e. y = mx + c, where m is a number representing the slope and c is a number representing the y-intercept).
Hence, from the equation, we can see that the slope if 3 and the y-intercept is (0, 1).