ethompsonn
What is the slope of the line that passes through the points (3, 5) and (1, 7)?



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ethompsonn
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the equation is 3x+y=11

hartnn
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The slope of the line through points (x1,y1) and (x2,y2) is given by :
\(\huge m=\frac{y_1y_2}{x_1x_2}\)
now,just put the values and find m.

hartnn
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the equation isn't correct for those 2 points

ethompsonn
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im confused

hartnn
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can u substitute the points in the formula i gave ?

yummydum
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\[(x_1,y_1)~(x_2,y_2)\]   \[(3,5)~(1,7)\]

ethompsonn
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dw:1352734187091:dw

yummydum
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so x1=3 y1=5 x2=1 and y2=7
now just plug in the values and simplify :)

hartnn
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2/4 = 1/2

hartnn
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everything else is correct :)

yummydum
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yup :D

ethompsonn
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ogg so 1/2?

hartnn
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yes, slope = m = 1/2

ethompsonn
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What is the equation of a line that has a slope of 5 and passes through the point (0, 2)?

hartnn
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the equation of line in slope point form is
yy1 = m (xx1)
m= slope = 5 here
(x1,y1) = point = (0,2) here
now just put values.

hartnn
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next time , please, make a new post for new question