Katriana and Andrew started the day with the same amount of money. Katriana spent $5 on lunch. Andrew spent $3 on lunch and $2 on a snack after school. Do Katriana and Andrew have the same amount of money left?

Yes
5- whatever amount of money they had
2+3=5- whatever amount of money they had both equal the same amount

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