Find the distance between points (3,2) and (3,-6)

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

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)