Which of the following points is in the solution set of y < x2 - 2x

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Which of the following points is in the solution set of y < x2 - 2x - 8? a.(-2, -1) b.(0, -2) c.(4, 0)

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Asked 6/16/2014 12:35:21 PM

Updated 7/23/2014 11:34:34 PM

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Flagged by yeswey [7/23/2014 11:33:28 PM]

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User: Which of the following points is in the solution set of y < x2 - 2x - 8? a.(-2, -1) b.(0, -2) c.(4, 0)

Weegy: B.(-2,0)
3oss1ady|Points 31|

User: Which of the following describes the translation of the graph of y = x2 to obtain the graph of y = -x2 + 3? a.reflect over the x-axis and shift right 3 b.reflect over the x-axis and shift up 3 c.reflect over the y-axis and shift down 3

Weegy: x^2 has a negative coefficient so the parabola is opens downward. x-coordinate = 0/2(-1) = 0 ; since x-coordinate is in 0, then the graph crosses x-axis only 1.
Zac9829|Points 24|

User: Write the quadratic equation in general form. What is the value of b2 - 4ac? 1 = 2x2 + 5x? a.17 b.33 c.34

Weegy: 17
papop|Points 184|

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Asked 6/16/2014 12:35:21 PM

Updated 7/23/2014 11:34:34 PM

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This conversation has been flagged as incorrect.

Flagged by yeswey [7/23/2014 11:33:28 PM]

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yeswey

1 = 2x^2 + 5x
2x^2 + 5x - 1 = 0 which is the general form.
a = 2, b = 5, c = -1
b^2 - 4ac = 5^2 - 4(2)(-1) = 25 + 8 = 33

Added 7/23/2014 11:34:34 PM

This answer has been confirmed as correct and helpful.

Confirmed by jeifunk [7/23/2014 11:43:36 PM]

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