f(x) is a piecewise linear function with three intervals. For x between -10 and 10, the function has a slope of 2 and a y-intercept of 1. For x greater than 10, the function has a slope of 1.5 and a y-intercept of 2.5. For x less than -10, the function has a slope of -1.5 and a y-intercept of -2.5.

