Could you explain what to do here?

y-intercept is number in the equation that is not next to a variable.
For example in the first problem:
y = x + 5
Since x is alone, this means that the slope is 1.
The y-intercept is 5.
The equation is already in slope-intercept form.
Slope intercept form is y = mx + b.
m is slope and b is y intercept.
slope-intercept form: y = mx + b
m = slope
b = y-intercept
In this paper, identify the different parts of slope-intercept form.
For example, 1) m = 1 / y-intercept = 5, 2) m = 3 / y-intercept = 6, etc.