Understanding Function Graphs

The video tutorial explains how to interpret a function graph by identifying inputs and outputs along the horizontal and vertical axes, respectively. It demonstrates finding specific function values, such as f(2), f(-1), f(4.5), and f(0), by locating the input on the horizontal axis, moving vertically to the graph, and then horizontally to the vertical axis to determine the output. The tutorial emphasizes understanding the relationship between input and output values on a graph.

What is the input variable in the function graph?

• Y

• Z

• X

• W

Where do we find the function outputs on a graph?

• Vertical axis

• Diagonal axis

• Horizontal axis

• None of the above

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

What is the output of the function when the input is 2?

• 3

• 0

• 1

• 2

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CCSS.8.F.A.1

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How do you find the output for a given input on a graph?

• Locate the input on the vertical axis and move horizontally

• Locate the input on the horizontal axis and move vertically

• Locate the input on the horizontal axis and move horizontally

• Locate the input on the diagonal axis and move vertically

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

What is the output of the function when the input is -1?

• -2

• 0

• 1

• 2

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CCSS.8.F.A.1

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What are the coordinates of the point when the input is -1?

• (-1, 0)

• (-1, 2)

• (-1, -2)

• (-1, 1)

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CCSS.HSF.IF.A.2

What is the output of the function when the input is 4.5?

• 2

• -4

• 4

• 0

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

What are the coordinates of the point when the input is 4.5?

• (4.5, 2)

• (4.5, 0)

• (4.5, -4)

• (4.5, 4)

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CCSS.HSF.IF.A.2

What is the approximate output of the function when the input is 0?

• 0.5

• 1.5

• 0

• 1

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CCSS.8.F.A.1

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What are the coordinates of the point when the input is 0?

• (0, 0.5)

• (0, 1)

• (0, 0)

• (0, 1.5)

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1