Question

56 POINTS!!!

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

1. The number of items per dollar

2. The total cost for all the items

3. The unit cost per item

4. The total number of items bought

Answer 1

Answer:

3 is the correct answer.

Explanation:

The slope of any line can be deyermined by using realation,

`m = (y2 - y1)/(x2 - x2)`

i.e. the change in value of y per the change in value of x.

In this case, the slope is cost(y-axis) per item(x-axis)

so the answer is unit cost per item.

Answer 2

the unit cost per item

Explanation:

The description of the graph tells you what the slope means. The slope is the (change in) y-value (cost) per (change in) x-value (item)