FUNCTIONS: Question Preview (ID: 10037)

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1. What is the equation of the axis of symmetry for the parabola y=-2x^2? Assume that the turning point (maximum point) is (1,6).
a) y=2
b) y=2
c) y=1
d) y=1

^Will the graph of the parabola y = -2x2 + 4x - 4 open upward or downward?
a) upward
d) downward

Which of the following statements is absolutely NOT true for the parabola y=(x+1)^2
a) The x-intercept is (-1,0)
b) The axis of symmetry is x = -1.
c) The axis of symmetry is y = -1.
d) The axis of symmetry is x = -1.

What is the equation of the axis of symmetry of the graph y = 3x^2 + 12x - 2 ?
a) x=-2
b) y=2
c) y=-2
d) x=2

Which is the equation for the parabola at points (3,0) and (-1,0)?
a) y = -x^2 - 4
b) y = x^2- 2x - 3
c) y = -x^2 + 2x + 4
d) y = -x^2 -2x - 4

What are the roots of the parabola y = x^2- 2x - 3 ?
a) 3 and 1
b) -4 and 0
c) 1 and 0
d) 3 and -1

What is the turning point, or vertex, of the parabola whose equation is y = 3x^2 + 6x - 1?
a) (3,44)
b) (1,8)
c) (-1,-4)
d) (-3,8)

For which quadratic equation (parabola) is the axis of symmetry x = 3?
a) y = -x2 + 3x + 5
b) y = x2 + x + 3
c) y = -x2 + 6x + 2
d) y = x2 + 6x + 3

A baseball player throws a ball from the outfield toward home plate. The ball\'s height above the ground is modeled by the equation y = -16x2 + 48x + 6, where y represents height,
a) 42 feet
b) 48 feet
c) 54 feet
d) 76 feet

The height, y, in feet, a ball will reach when thrown in the air is given by the equation y = -16x2 + 30x + 6. Find to the nearest tenth, the maximum height, in feet, the ball wi
a) 39.3 feet
b) 20.1 feet
c) 20.0 feet
d) 33.2 feet

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