Question

The standard form of a quadratic function is given below. Select ALL

statements which MUST be true about its graph.

f (x) = ax? + bx + c

A. The y-intercept of the graph is at (0,c).

B. The graph has an x-intercept at (c,0).

C. When "a" is positive, the graph opens up.

D. The graph always has two distinct x-intercepts,

Answer 1

A; C.

Explanation:

B. not correct: the graph can have no interception; one interception or two interception;

D. not correct: the graph can have no interception; one interception or two interception.