OGT Slope Review

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OGT Slope Review

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Slope

• Slope means
• rise over run rise
  run
• Slope is how much a line rises compared to how
  much it runs.

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The Slope Of A Line
.
(x2, y2)
.
y2 - y1
(x1, y1)
x2 - x1
The slope m of a line that passes through the
points (x1, y1) and (x2, y2) is
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The Slope Formula

• Any two points on a line can be labeled (x1,y1)
  and (x2,y2) so...

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The Slope Formula

• The formula is

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Label the 2 Points
(-1,5)(x1,y1)
Y
X
(2,2)(x2,y2)
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Using the Formula

• Let (-1,5) be (x1,y1) and (2,2) be (x2,y2) so
• 2-5 -3 -1
• 2- -1 3

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So..The slope is -1
Y
Slope -1
X
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Positive and Negative Slopes

• Lines with negative slopes go down (decrease)
  from left to right.

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Positive and Negative Slopes

• Lines with positive slopes go up (increase) from
  left to right.

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Horizontal and Vertical Lines

• Horizontal lines have a slope of 0.
• Vertical lines have NO Slope

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Horizontal Lines
Y
Slope 0
X
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Vertical Lines
Y
No Slope
X