Question

The equation r=2/5t can be used to find the cups of red paint when given the total cups of paint.Draw a line represent the equation.

Answer 1

We have the relation:

`r=(2)/(5)t`

where r is the cups of red paint and t is the total cups of paint.

It is a proportional relationship, as r/t is constant.

We know that the point (0,0) belongs to the line, as when t=0, r is 0 too.

We can find another point by assigning a value to t and calculate for r.

For example, for t=10, we have:

`r(10)=(2)/(5)\cdot10=(20)/(5)=4`

Then, the point (t,r) = (10,4) belongs to the line.

With 2 points we can graph the line as: