If dy /dx is undefined for a given value of x, then the line tangent to the curve y = f(x) at that value does not exist.

False. The tangent line at that point is a vertical line.

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).

3100

step-by-step explanation: