Question

There is a proportional relationship between minutes and dollars per minute, shown on a graph of printing expenses. The graph passes through the point (1, 3.40). What is the slope of the graph? What is the unit rate? Complete the explanation The slope is passes through the point (1 The unit rate is $ Vmin. If the graph ofa proportional relationship r), then r equals the slope and unit rate.

Answer 1

Let:

(x1,y1)=(0,0)

(x2,y2)=(1,3.40)

The slope is:

`m=(y2-y1)/(x2-x1)=(3.40-0)/(1-0)=(3.40)/(1)=3.40`

The unit rate is:

`(3.40)/(\min )`