Answer:
option A is correct, i.e. y = 7x/3 ; y(7) = 49/3.
Step-by-step explanation:
If y varies directly as x, we can write its relationship as given below:-
y = m*x
where m is the slope of the line on its graph.
Given y=7 when x=3, we can substitute these values in the equation and find m as follows:-
7 = m*3
m = 7/3
So, the required equation is as follow:-
y = 7/3 x
Finding y when x=7, substitute x=7 in the above equation,
y = (7/3)*(7) = 49/3
Hence, option A is correct, i.e. y = 7x/3 ; y(7) = 49/3.
