Keisha bought a new pair of skis for $450.She made a payment of $120 and got a student discount of $40.Her mother paid 1/2 of the balance. How much does Keisha have left to pay?

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for