What is the vertex, axis of symmetry, of #y=5x^2 - 8x -6#? Does the parabola open up or down?
1 Answer
Feb 29, 2016
AOS: x= 0.8
Vertex: (0.8, -9.2)
Parabola opens: up.
Explanation:
Axis of Symmetry (vertical line that divides the parabola into two congruent halves): x= 0.8
Found by using formula:
(
Vertex (peak in the curve): (0.8, -9.2)
Can be found by imputing the Axis of Symmetry for x to find the y.
y=
The parabola opens up since the a value of this graph is positive.
(
You can also find all of this information by looking at it on the graph:
graph{y=5x^2-8x-6 [-8.545, 11.455, -13.24, -3.24]}