Question 914046
You know a y-coordinate but you want to know the corresponding x-coordinate.


Try solving the equation for x in terms of y:
{{{7x=-y-12}}}
{{{x=(-y-12)/7}}}
Substitute the value of the y-coordinate:
{{{x=(-2-12)/7}}}
{{{x=-14/7}}}
{{{highlight(x=-2)}}}, when simplified.