Question 890388
Do it like this:
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I need help finding the equation of the line containing the given points 
(-5,-2), (-3,-7)
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Step 1, find the slope, m, of the line.
Step 2, use y = mx+b and either point to find b, the y-intercept.
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Or,
Step 2, y-y1 = m*(x-x1) where (x1,y1) is either point.