An equation of a line

22, Write an equation of a line containing (2, —3) and perpendicular to 3x + 4.y =14.

16. The formula for the surface area (A) of a cylinder with radius r and heighth is given by A. = 21-Tr2 + 2nrh. Solve this formula for h.
    24, Two angles are supplementary, Three times the measure of one angle is 20’m ore than the measure of the other. Find the measure of each angle.
17. Solve the radical equation,
    x-1=4
18. Solve this system by the substitution method,
    3X+2y=18
    y=x+4
19. Simplify this expression,

2(4x+1)—(x+3)
28, When solving a system of equations using the addition or substitution method, haw can you tell if a system hes infinitely many or no solutions? What’s the relationship between the graphs in these situations?