Find the equation of a line perpendicular to 4x - 5y = -1 that contains the point (5, -4)

What are the domain and range of f(x)=[1/5]x

What is an equation of the line that passes through the point (-2,3) and is parallel to the line whose equations is y=3/2x-4? i am stuck between y=3/2x or y=3/2x+6 : (

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles