What is the slope of a line that is perpendicular to the line: -4x + 6y = -1 ? A. -3/2
B. -2/3
C. 1/4
D. 3/2

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Solve x+3y=6 and 4x-6y=6 by elimination . show work !