Suppose point j has coordinate of -2 and jk=4. then what is the possible coordinate(s) for k? 4 2 or -4 -4 2 or -6

Does the point (1, sqrt 7) lie on circle shown.

How can you tell when x and y are not directly proportional?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.