Question

Y=6 when X=3 write and graphi each direct variation fun riom

Answer 1

From the statement of the problem, we know that:

0. y varies directly with x,

,

1. y = 6 when x = 3.

1) From point 1, we must have:

`y=k\cdot x\text{.}`

2) From point 2 we know that y = 6 when x = 3, replacing these data in the last equation, we have:

`6=k\cdot3.`

Solving for k, we get:

`k=(6)/(3)=2.`

3) The equation is:

`y=2x\text{.}`

Answer

• Equation: ,y = 2x

,

• Graph