What is 2+2? i seriously dont know ;)

Geometry ? i don't know how to do any of these.

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p