the x-axis on the graph represents the number of identical items purchased. the y-axis represents the total cost in dollars. what does the slope of the graph represent?

The slope of the graph will represent total cost in dollars per number of identical items purchased

Step-by-step explanation:

Here, we want to know what the slope represents

Mathematically, the slope will represent the result of the change in the y-axis divided by the change in x-axis

That will in this case be;

total cost in dollars per number of identical items purchased

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.