Which of the following accurately lists all discontinuities of the function below?
point discontinuity at x = -2
point discontinuity at x = 4; jump discontinuity at x=-2
point discontinuities at x= 4 and x= 4, jump discontinuity at x = -2
jump discontinuities at x= 4,x= -2, and x= 4

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

step-by-step explanation: