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| A QUICK AND DIRTY ALGEBRA LESSON |
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POINT-SLOPE FORM OF A LINEAR EQUATION
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The POINT-SLOPE of the equation of a nonvertical line the passes through the point (x1,y1) with slope is
y-y1=m(x-x1)
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EXAMPLE #1
Write the equation of the line with slope -3 the passes through the point (-1,7).
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y-y1-m(x-x1) USE THE POINT- SLOPE FORM.
y-7= -3[x-(1)] SUBSTITUTE (-1,7) FOR (X1,Y1) AND -3 FOR M.
y-7= -3(x+1 SIMPLIFY INSIDE THE GROUPING SYMBOLS. |
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| Page Updated Thu May 12, 2005 8:58am EDT |
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