Question 859300
Parallel lines in a plane have the same slope.  You are looking for some line with equation y=(3/4)x+b.  Use the point which the line must contain to find the value for b.


{{{b=y-(3/4)x}}}
{{{b=-7-(3/4)20}}}


You could use point-slope form instead, but keeping with slope-intercept form is simpler.