Which table represents y as a function of x

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?