Find the slope first, or change of y divided by change of x.
change of y = -3 - 0 = -3
change of x = 10 - (-5) = 15
-3/15 = -1/5
Now plug in one of the ordered pairs into the y=mx+b formula.
0 = -1/5(-5) + b
0 = 1 + b
b = -1
Equation:
y = 1x -1
or simply y = x - 1
2006-12-14 08:43:16
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answer #1
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answered by Anonymous :) 5
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First: find the slope:
m = (second y - first y) / (second x - first x)
m = (-3 - 0)/[10-(-5)]
m = -3/(10+5)
m = -3/15 reduced to -1/5
Second: take one set of numbers and the slope and put them into the slope-intercept form. solve for the y-intercept "b."
y = mx + b
0 = (-1/5)(-5) + b
0 = 1 + b
0 – 1 = 1-1 + b
-1 = b, b = -1
Third: take the slope and y-intercept and put them into the slope-intercept formula:
y = mx + b
y = -1x/5 – 1 OR y = -x/5
2006-12-14 08:48:36
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answer #2
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answered by ♪♥Annie♥♪ 6
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(-5,0) and (10,-3)
slope m=(0--3)/(-5-10)=3/-15=-1/5
y=-x/5+b
0=-5/-5+b
0=1+b
b=-1
y=-x/5-1
check
-3=-10/5-1
-3=-2-1
2006-12-14 08:41:35
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answer #3
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answered by yupchagee 7
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the equation is
y=1/5x-1
1/5 means one fifth
2006-12-14 08:40:33
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answer #4
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answered by Anonymous
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y = mx + b
m = (y2 - y1)/(x2 - x1) = (-3 - 0)/(10 + 5) = -3/15 = -1/5
b = y - mx = 0 - (-5)*(-1/5) = -1
y = -x/5 - 1
2006-12-14 08:41:13
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answer #5
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answered by Dave 6
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give me a min
2006-12-14 08:37:59
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answer #6
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answered by Anonymous
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