5. the value of y varies directly with x, and
when y = 9, x = 3
1. write an equation to represent the direct
variation.
. find the value of y when x is a

y= 3x

Step-by-step explanation:

1. The question lack info

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x