Question

start by finding the change in vertical and horizontal distance from (2, 20) to (4, 30). in other words, what is the change in number of toys and the total cost from (2, 20) to (4, 30)?
slope = \frac{vertical distance}{horizontal distance}

Explanation:

Step1: Find horizontal change

$\Delta x = 4 - 2 = 2$

Step2: Find vertical change

$\Delta y = 30 - 20 = 10$

Step3: Calculate slope

$\text{Slope} = \frac{\Delta y}{\Delta x} = \frac{10}{2}$

Answer:

Change in number of toys (horizontal distance): 2
Change in total cost (vertical distance): 10
Slope of the line: 5