BELL RINGER: <<<<<< Question very similar to test >>>>>>>>

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BELL RINGER ltltltltltlt Question very similar to test
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The height of a rocket launched from the ground
can be modeled by the function f(x) -16x2
96x What is the rockets maximum height?
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Test 1.2 Review
Vertex form of a quadratic equation f(x) a(x
h)2 k The vertex is the ordered pair
(h,k)
Standard form of a quadratic equation f(x)
ax2 bx c
Find the vertex when in standard form using x
-b/2a and y f(-b/2a). The vertex provides the
maximum or minimum value.
Identify the axis of symmetry of a quadratic
equation in standard form by finding the x value
of the vertex.
How to make a table when you have a quadratic
equation in any form.
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2. The distance d in meters traveled by a
skateboard on a ramp is related to the time
traveled t in seconds. This is modeled by the
function What is the maximum distance the
skateboard can travel, and at what time would it
achieve this distance? Round your answers to the
nearest hundredth. a. 5.00 meters in 0
seconds c. 4.73 meters at 0.23
seconds b. 0.23 meters at 4.73 seconds d. 5.00
meters at 0.47 seconds
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4. The function gives the height in feet of a
ball seconds after it is thrown upward from the
roof of a 64-foot tall building. How many seconds
after the ball is thrown does it reach its
maximum height? What is the balls maximum height?

• The ball reaches a maximum height of 64 feet 0
  seconds after it is thrown.
• The ball reaches a maximum height of 96 feet 1
  second after it is thrown.
• The ball reaches a maximum height of 100 feet 1.5
  seconds after it is thrown.
• d. The ball reaches a maximum height of 104
  feet 1.5
• seconds after it is thrown.

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5. A ball is thrown from the top of a hill. The
graph shows the relationship between the height ,
in meters, of the ball above the ground at the
base of the hill and the time, in seconds, after
the ball is thrown. The function
models as a function of
. What is the significance of the vertex of the
parabola in terms of height and/or time?
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7. Write the function f(x) 6x2 24x 21 in
vertex form, and identify its vertex.
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8. Find the axis of symmetry of the parabola.
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9. Kristi rides her bike to school and has an
odometer that measures the distance traveled. She
subtracts this distance from the distance to the
school and records the distance that remains
between her and the school. Find the intercepts.
What do the intercepts represent?
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10. The table shows the height of a sassafras
tree at each of two ages. What was the trees
average rate of growth during this time period?
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12. The graph shows the height , in feet, of a
football at time , in seconds, from the moment it
was kicked at ground level. Estimate the average
rate of change in height from 1.5 seconds to
1.75 seconds.
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• Graph
• Find the axis of symmetry and the vertex.

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14 Consider What is its vertex and y-intercept?
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15. Find the x- and y-intercepts of
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18. This table shows the U.S. federal minimum
hourly wage in different years. During which time
interval did the wage increase at the greatest
rate?
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Extra Study Guide Problem The parent function
f(x) x2 is vertically stretched by a factor
of 4 and translated 6 units right and 8 units up.
Write the new equation in vertex and standard
form.