Question 936805
You have two known points and two unknown points.  Find slope, pick one of the known points, form the point-slope form for the linear equation and simplify it.


SLOPE,
{{{m=cross((27-7)/(-18-(-2)))}}}-----This was my first mistake.  Fixing the rest of the solution so it will be correct:


Fixing....
{{{m=(27-(-18))/(7-(-2))}}}
{{{m=45/9}}}
{{{m=5}}}




Picking (27,7)
{{{y-27=5(x-7)}}}
{{{y-27=5x-35}}}
{{{-5x+y=27-35}}}
{{{5x-y=35-27}}}
{{{highlight(5x-y=8)}}}, standard form for the linear equation.


Now to finish your table:
-
x=0, what is y?
{{{5x-8=y}}}
{{{5*0-8=y}}}
y=-8 when x=0.
-
y=12, what is x?
{{{5x-12=8}}}
{{{5x=8+12}}}
{{{5x=20}}}
x=4 when y=12.