The equation you have presented is in slope intercept form.
Slope Intercept Form: y = mx + b
In slope intercept form, the variable m represents the slope, the variable b represents y value of the y-intercept, and the variables x and y represent a point on the graph. They are left as variables when writing the equation of a line.
y = 1/2x - 8
Here, m = 1/2 and b = -8.
From this, we know the slope is 1/2 and the y value of the y-intercept is -8.
Slope: 1/2
Y - Intercept: (0, -8)