SOLUTION: Find the equation of the line through (2,a) and (7,b).

Question 708148: Find the equation of the line through (2,a) and (7,b).

Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
What is important is to not let the fact that the coordinates for y being variables bother you.

Slope intercept form: y=mx+B
Slope formula:
Formula for y Intercept: B=y-mx
Change from convention ----- I'm using B for the y intercept because "b" is already taken by our problem for another purpose.

Do some calculations:
m=(b-a)/(7-2),
m=(b-a)/5
Pick one of the given points and use it to find B, the y-intercept.
Picking (2,a).

Formula For Line:
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