Find the value of X and Y

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?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

Write a similarity statement for the similar triangles. afgh ~ a