If the vertex of the graph of a quadratic function lies in quadrant III and the graph is concave up, how many $x$-intercepts does the graph have?
A) 1
B) 0
C) 2
D) 3

Question

Quizplus · Accepted Answer

Since the vertex is in quadrant III and the graph is concave up, the arms of the parabola extend upwards from the vertex. This means the parabola must cross the x-axis twice, resulting in 2 x-intercepts.

If the Vertex of the Graph of a Quadratic Function xxx

If the Vertex of the Graph of a Quadratic Function $x$