Slope & Y-intercept

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Note

Note to browser’s

This slope lesson is interactive and I have students use graph paper as they follow along

This is formulated for the California High School Exit Exam math standards

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Slope

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How do engineers build bridges?

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How do engineers build roads?

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How can we write 7% as a fraction?

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7% as a fraction??

Remember than any percent is a part of 100.

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The grade of a road is the same as slope

Here is the picture:

7 feet

100 feet

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Slope of a line

The slope measures the “rise” and “run” of the stairs beneath or above the line.

4

4

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Slope of a line

The “stairs” are all through the line and the same size.

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Slope of a line

Can I make a line if the stairs aren’t the same size?

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Slope of a line (m)

To find the slope, use the formula

4

4

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Slope of a line (m)

To find the slope, use the formula

4

4

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Slope of a line (m)

Find the slope of the following lines:

1

2

A)

B)

2

3

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Slope of a line (m)

Is the slope positive or negative?

Answer:

Positive, Read from left to right

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Try for yourself

Draw 2 lines with the following slopes on your graph paper.

A) B)

Start anywhere on your coordinate plane.

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