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9 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Slope
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Slope is the steepness of a line of an equation. It an be found by using the equation m=y2-y1/x2-x1
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(EX) find the slope of (2,2) (5,3) 3-2=1 5-2=-3 So m=-1/3 |
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Slope intercept form
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A linear equation
y=mx+b where m is the slope and b is the y intercept |
(EX) slope=4 and y int=12 y=4x+12 |
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Horizontal line
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Runs left to right and only across the y axis it NEVER touches the x axis the slope is always 0
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(EX) 0/5= horizontal line |
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Point-Slope form
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(y - y1) = m(x - x1). You need to know or find the slope and at least 1 point on the line (x1,y1)
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slope=7, x1=3 and y1=5 (y-5)=7(x-3) y-5=7x-21 change to y=7x-21+5 and that equals y=7x-16 |
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x-intercept
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Where the line crosses the x axis on a graph
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(EX) (2,0) y is always zero |
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y-intercept
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Where the line crosses the y axis on a graph
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(EX) (0,12) x is always zero |
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Slope formula
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the slope formula is y2-y1/x2-x1. Once you get your answer, simplify and leave it as a fraction
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(EX) find the slope with (6,3) (9,12) 12-3=9 9-6=3... so its 9/3 simplified 3/1 |
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Vertical line
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In a Fraction, if 0 is the denominator then its a vertical line. runs up and down and NEVER touches the x axis. Slope is always undefined
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(EX) 18/0 slope is undefined. Vertical Line |
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Standard form
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Ax + By = C. a linear equation where A and B are real numbers. There cannot be fractions or decimals in this equation
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(EX) Given y=14x+6 the standard form of this is 14x-y=6 |
