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Anna35 [415]
3 years ago
8

Find the equation of the line through (-8,-7) and (0,-9)

Mathematics
2 answers:
stira [4]3 years ago
6 0
What is the formula for this equation?
postnew [5]3 years ago
5 0
If the equation of the line is linear function, then the solution consist of theese steps:
1. equation of line y=kx+b, where k and b - numbers, x and y coordinates of points.
2. using the equation of the line it is possible to substitute coordinates of points into equation:
\left \{ {{-7=-8*k+b} \atop {-9=0*k+b}} \right. \ =\ \textgreater \  \  \left \{ {{-8k+b=-7} \atop {b=-9}} \right. \ =\ \textgreater \  \  \left \{ {{k=- \frac{1}{4}} \atop {b=-9}} \right.
3. the equation is:
y=- \frac{1}{4}x-9
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