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25 Cards in this Set
- Front
- Back
linear equation for a vertical line is
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x=a number
ex. x=4 |
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linear equation for a horizontal line is
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y=a number
ex. y=7 |
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x intercept is where the line crosses the
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x-axis
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the order pair for x-intercept will be
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(x,0)
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y-intercept is where a line crosses the
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y-axis
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slope is identified as
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rise over run, change in y over change in x, m=y2-y1
x2-x1 |
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a line has a ______ slope if it rises from left to right
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positive
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a line has a ______ slope if it falls from left to right
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negative
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vertical lines have ______ slope (no slope)
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undefined
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horizontal lines have _____ slope
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0
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a slope of 0 over a number represents a _____ line
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horizontal
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slope intercept form is
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y=mx+b
m=slope b=y intercept |
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you get slope intercept form by solving any equation for
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y
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Point-slope form is
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y-y1=m(x-x1)
y=variable y1=y cordinate m=slope x=variable x1=x cordinate |
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standard form is
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ax+by=c
slope is -a over b y-intercept is c over b |
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a is always with
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x
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b is always with
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y
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youcan find the _____ by substituting 0 for y and solve for x
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x-intercept
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you can find the _____ by subtituting 0 for x and solving for y
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y-intercept
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slope is the opposite of _____ (in standard form)
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a over b
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c over b in standard form is
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y-intercept
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y=4x-1 is a example of a linear equation in
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slope intercept form
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the linear equation 3x+4y+12 is in
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standard form
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a number over 0 represents the slope of a _____ line
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vertical
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what is the formula for slope
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m=y2-y1
x2-x1 |