Question 315055
The solution offered by the OTHER tutor has an error.  Where he attempted to solve for b=4-2/3, it should have been b=4+2/3, which would have given a final answer of y=2/3 x + 14/3, NOT 10/3 !!


Dr. Robert J. Rapalje, Retired



If you got to the part of the problem where you had 
{{{y-4=(2/3)(x+1)}}}


Next, I recommend clearing the fraction by multiplying both sides by 3:
{{{3y-12= 2x+2}}}


Finally, in order to get x and y terms on the same side with a positive x coefficient, I would subtract 3y from each side:
{{{-12= 2x-3y + 2}}}


Bring the numbers to the left side by subtracting 2 from each side:
{{{-14=2x-3y}}}  or {{{2x-3y=-14}}}


As a check, you may want to plug in the (-1,4) to see if it works:
2x-3y=-14
2(-1)-3(4)=-14
-2-12=-14

It checks.


Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus