SOLUTION: 1.The vertex is(4,-7),and the parabola opens upward.Determine the number of x-intercepts. 2.The vertex is(-5,4),and the parabola opens downward.Determine tne number of x-intercept

Question 478792: 1.The vertex is(4,-7),and the parabola opens upward.Determine the number of x-intercepts.
2.The vertex is(-5,4),and the parabola opens downward.Determine tne number of x-intercepts.
3.The vertex is(2,0).Determine the number of x-intercepts.
4.The vertex is(4,2),and the y-intercepts is(0,5).Determine the number of x-intercepts.
5.The vertex is(-2,-5),and the parabola opens downward.Determine the number of x-intercepts.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1.The vertex is(4,-7),and the parabola opens upward.Determine the number of x-intercepts.
Vertex is below the x-axis and parabola opens up.
2 x-intercepts
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2.The vertex is(-5,4),and the parabola opens downward.Determine tne number of x-intercepts.
Vertex: above x-axis
Opens down:
2 x-int
====================
3.The vertex is(2,0).Determine the number of x-intercepts.
Vertex on x-axis:
x-int: 1
------------------
4.The vertex is (4,2),and the y-intercepts is(0,5).Determine the number of x-intercepts.
Low point at y = 2
Since y-int at y = 5, parabola opens up.
x-int: none
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5.The vertex is(-2,-5),and the parabola opens downward.Determine the number
Hight point at y = -5
Opens down
x-int: none
====================
cheers,
Stan H.
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