Question

Determine whether y varies directly with x. If so, find the constant of variation and write the equation.

(refer to link for graph)


yes; k = 3 and y = 3x


yes; k = 3 and x = 3y


no


yes; and k=1/3 and y=1/3x

Answer 1

Last option

Explanation:

As per graph,

• this is linear function

• x=3 ⇒ y=1
• x=-3 ⇒ y=-1
• x=0 ⇒ y=0

Then y= 1/3 x

so answer is yes; k=1/3 and y=1/3x