With the equation of a line through the given points or through the given point with the given slope (Algebra I)?
(5,7), (6,8)
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OpenStudy (anonymous):
**write
OpenStudy (anonymous):
Both slope interject and point slope form.
OpenStudy (anonymous):
intercept**
OpenStudy (anonymous):
you got the slope?
OpenStudy (anonymous):
No
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OpenStudy (anonymous):
you know how to find it?
OpenStudy (anonymous):
Not really :/ rate of change??
OpenStudy (anonymous):
yeah first we can do it in our heads, then we can do it the donkey way
from 5 to 6 is one unit right in the x direction
from 7 to 8 is one unit up in the y direction
right one, up one slope is one
OpenStudy (anonymous):
so the slope is 1
OpenStudy (anonymous):
else we compute
\[\frac{y_2-y_1}{x_2-x_1}=\frac{8-7}{6-5}=\frac{1}{1}=1\]
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OpenStudy (anonymous):
yeah it is \(1\) now use
\[y-y_1=m(x-x_1)\] with either point as \((x_1,y_1)\) and \(m=1\)
OpenStudy (anonymous):
kk can you finish it with me?
OpenStudy (anonymous):
plug one in to the equation y-y1=m(x-x1)
OpenStudy (anonymous):
sure we will put the first pair of numbers in the point slope formula
\[y-7=1(x-5)\] of course we don't need the 1, so it is really
\[y-7=x-5\]
OpenStudy (anonymous):
solve for \(y\) by adding 7 to both sides
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