Grade 10 Math: Quadratic Equations, Graphs, and More Maximum and Minimum of Quadratic Functions

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Determine the maximum or minimum value for the following equation $$-y=4(x+1)^2+6$$

Maximum: 6
Minimum: 6
Maximum: 2
Maximum: 1
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Determine the maximum or minimum value for the following equation $$y=-2x(x-4)$$

Minimum: 8
Minimum: -8
Maximum: 8
Maximum: -8
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Determine the maximum or minimum value for the following equation $$y=(x-5)^2$$

Minimum: 5
Minimum: 0
Maximum: -5
Maximum: 0
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Determine the maximum or minimum value for the following equation $$y=2x^2-7$$

Minimum: -7
Minimum: -7
Maximum: -2
Maximum: 2
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Determine the maximum or minimum value for the following equation $$y=x^2-4x-1$$

Maximum: 4
Maximum: -5
Minimum: 5
Minimum: -5
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Determine the maximum or minimum value for the following equation $$y=-3x^2-12+15$$

Maximum: -27
Maximum: 27
Minimum: 27
Minimum: -27
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The height of a arrow shoot vertically upward from a penthouse is shown by \(h(t)=-5t^2+20t+50\) where \(h(t)\) is the arrow's height above the ground in yards, at time \((t)\) seconds after the shot. i) Determine the maximum height of the arrow.

45 yards
60 yards
100 yards
70 yards
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ii) How long does it take for the arrow to reach its maximum height?

1 seconds
2 seconds
3 seconds
4 seconds
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iii) How high is the penthouse?

50 yards
75 yards
100 yards
125 yards
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