Question 479245
find the equation of the line that passes through the point (2,9) and has slope 4. write your answer in point-slope form.
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Substitute (x<sub>1</sub>,y<sub>1</sub>) = (2,9) and m = 4 into

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

 y - 9 = 4(x - 2)

That's it in point-slope form.  
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If they had said to write your answer in slope-intercept 
form you would have had to take it further to the form y=mx+b:
 y-9=4x-8
   y=4x+1
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Edwin</pre>