What is the direct variation of y=8x

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

Through non-collinear points there is exactly one plane.