Question 1 is linked to question 3 i don't get question 3

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

Consider the following function. which of the following graphs corresponds to the given function? w. x. y. z. a. z b. y c. x d.