4-2 Practice

Use this function to answer 1-5

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The x value of the vertex is _______. The y value of the vertex is _______. What is the vertex? _______ 

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What is the axis of symmetry?

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Does it have a min or max? What is it? (answer looks like: max y=2)

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What is the y-int?

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What is the range?

Use this function to answer 6-10

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The x value of the vertex is _______ . The y value of the vertex is _______ What is the vertex? _______ 

1

What is the axis of symmetry?

1

Does it have a min or max? What is it? (answer looks like: min y=2)

1

What is the y-int?

1

What is the range?

1

Graph this function by finding the vertex. Then plot the y-int and a point on the other side for symmetry.

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Graph this function by finding the vertex. Then plot the y-int and a point on the other side for symmetry.

Use this function to answer 13-15

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What is the x-value of the vertex? *hint:

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What is the vertex? (plug in x and solve for y)

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Write the function in vertex form ('a' stays the same)

Use this function to answer 16-18

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What is the x-value of the vertex? *hint:

1

What is the vertex? (plug in x and solve for y)

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Write the function in vertex form ('a' stays the same)

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What is the x-value of the vertex? *hint:

1

What is the vertex? (plug in x and solve for y)

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Write the function in vertex form ('a' stays the same)

Use this function to answer 22-23

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Write the function in standard form

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What is the y-intercept? (remember, it's an ordered pair!)

Use this function to answer 24-25

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Write the function in standard form

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What is the y-intercept?

For these word problems, draw a picture and label everything you know. You'll need to find the vertex first. And remember, parabola's have symmetry!! Don't forget your units.

1

Find the x-value of the vertex. Round up to the nearest whole number.

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How high above the ground is the tallest point of the arch? (find the y-value of the vertex by plugging in the x-value you found, round up to the nearest whole number)

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How far apart are the legs of the arch at their bases? (assume the arch starts at (0,0) on the graph and remember SYMMETRY)

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Find the x-value of the vertex. Round to the nearest whole number.

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What is the maximum height that the ball will reach?

1

What is the axis of symmetry?

Does it have a min or max? What is it? (answer looks like: max y=2)

What is the y-int?

What is the range?

What is the axis of symmetry?

Does it have a min or max? What is it? (answer looks like: min y=2)

What is the y-int?

What is the range?

Graph this function by finding the vertex. Then plot the y-int and a point on the other side for symmetry.

Graph this function by finding the vertex. Then plot the y-int and a point on the other side for symmetry.

What is the x-value of the vertex? *hint:

What is the vertex? (plug in x and solve for y)

Write the function in vertex form ('a' stays the same)

What is the x-value of the vertex? *hint:

What is the vertex? (plug in x and solve for y)

Write the function in vertex form ('a' stays the same)

What is the x-value of the vertex? *hint:

What is the vertex? (plug in x and solve for y)

Write the function in vertex form ('a' stays the same)

Write the function in standard form

What is the y-intercept? (remember, it's an ordered pair!)

Write the function in standard form

What is the y-intercept?

Find the x-value of the vertex. Round up to the nearest whole number.

How high above the ground is the tallest point of the arch? (find the y-value of the vertex by plugging in the x-value you found, round up to the nearest whole number)

How far apart are the legs of the arch at their bases? (assume the arch starts at (0,0) on the graph and remember SYMMETRY)

Find the x-value of the vertex. Round to the nearest whole number.

What is the maximum height that the ball will reach?

At what distance from the batter will the ball hit the ground? (the batter is at (0,0))