What does 1 3/4 x 4 1/6 equal

Which of the following lines is not parallel to the graph of y = 4x +7?

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3