If yyy varies directly with xxx and y=12y = 12y=12 when x=4x = 4x=4, find yyy when x=7x = 7x=7.A151515B282828C242424D212121check_circleExplanationk=12/4=3k = 12/4 = 3k=12/4=3, so y=3⋅7=21y = 3 \cdot 7 = 21y=3⋅7=21.