given that y varies directly with x what is the equation of direct variation if y is 16when x is 20?
a y=1 and 1/5x
b y=5/4x
c y=4/5x
d y=0.6x
Since y varies directly with x, therefore when:
y=16 and x=20, then,
y/x=16/20=.8 ratio of direct variation, therefore,
c=4/5=.8 is the answer.
