Question 977010
Point-Slope Form for Equation of a Line:
{{{y-v=m(x-u)}}}  has slope m and goes through point (u,v).


Two parallel lines in the plane have the same slope, m.


Two perpendicular lines in the plane have slopes that {{{m*m[p]=-1}}}.




Your parallel line question
{{{y-0=(3/4)x-4}}}
Simplify this and put into whatever form you want.


Your perpendicular line question
{{{y-1=-1(x-(-7))}}}
Do what more you need...