Keith and Spiro both play tennis on the weekends. Keith plays 4 more games than Spiro, and together they played 12 games, How many games did each person play?

step-by-step explanation:

total income = price of one ticket   *   number of tickets sold

  y                 =     4                                   x

so the equation is y=4x     with x≥0   because number of tickets sold can not be negative

thus the equation is a semi -line with an end point at

(0,0)

passing through :

x=1     y=4(1) = 4   so through (1,4)

3x-x+2=4 i think that's is the answer, and i hope it you