Answer:
12
Step-by-step explanation:
Constant of proportionality is basically the same thing as a slope.
The slope is the variable m in y=mx+b, where x is a variable. 12 is the slope here.
However, there are ways to properly solve this.
To find constant of proportionality, we find it by dividing the y coordinate by the x coordinate.
Let's plug 1 in for this equation to get a point on the graph. y=12(1)=12
(1,12) is a valid point on this graph.
Mentioning earlier, we divide the y coordinate by the x coordinate to find the constant of proportionality, which is 12/1=12.
Same thing as slope.
