Question 732047
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slope 4, through the point (-2, -5)

First we use the point-slope form:

Point-slope formula:

y - y<sub>1</sub> = m(x - x<sub>1</sub>)

where m = 4 and (x<sub>1</sub>,y<sub>1</sub>) = (-2,-5)

y - (-5) = 4(x - (-2))

   y + 5 = 4(x + 2)
   y + 5 = 4x + 8
       y = 4x + 3

Now we must get it in the form ax + by = c

       y = 4x + 3

Add -4x to both sides

 -4x + y = 3

But the coefficient of x must be positive to have the standard form,
so we multiply through each term by -1, which changes all the signs:

 4x - y = -3

Edwin</pre>