The equation y = 1 5 x represents a proportional relationship. explain how you can tell the relationship is proportional from the graph of the equation, and how you can find the constant of proportionality.

Step-by-step explanation:

"y = 1 5 x" is ambiguous; please do not leave spaces.  I'm assuming you meant y = 15x.

If you graph this, you'll see a line with slope 15 that goes through the origin.  If there were a y-intercept other than zero, such as in y = 15x + 5, this equation would not represent a proportional relationship.

In summary:

There's a constant ("constant of proportionality") slope, which here is 15.

The line MUST go through the origin.

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24