Question

Can anyone help me with this?

Answer 1

Answer:

Constant of proportionality is $r = \frac{10}{3}$

Equation is $c = \frac{10}{3}g$

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Explanation:

The general equation they give is c = rg

Solving for r leads to $r = \frac{c}{g}$. We divided both sides by g to get this.

Now pick any point on the diagonal line. I'll pick (3,10)

The graph shows the horizontal axis is g and the vertical axis is c. The point (3,10) means g = 3 and c = 10 pair up together.

Making r to be,

$r = \frac{c}{g} = \frac{10}{3}$

and the equation in the form c = rg would be

$c = \frac{10}{3}g$