Rewrite your function as a equation:
y=0.15x -75
Use the slope-intercept form to find the slope and y-intercept:
y=mx+b
Find the values of m and b using the form y=mx+b
m=0.15
b= -75
The slope of the line is the value of m, and the y-intercept is the value of b.
Slope: 0.15
Y-Intercept: -75