Which equation represents a nonproportional relationship?
a. y=3x+0
b. y=-3x
c. y=3x+5
d. y=1/3x
chose only

Ineed if you could explain and give me the answer you! this needs done

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when equals y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work