select the graphs that have an equation with a < 0.
select the graphs that have an equation with a < 0.
Answer
Explanation:
Step1: Recall quadratic - function graph shape
For a quadratic function (y = ax^{2}+bx + c), if (a>0), the parabola opens upward; if (a < 0), the parabola opens downward.
Step2: Analyze each graph
Examine each of the given graphs. The first and fourth graphs open upward, so for them (a>0). The second and third graphs open downward, so for them (a < 0).
Answer:
The second and third graphs.