alicia bought a notebook and several erasers at the student store. the graph shows the relationship between…

alicia bought a notebook and several erasers at the student store. the graph shows the relationship between the total cost of her items and the number of erasers she purchased. what is the cost of each eraser? $1.00 $1.50 $2.00 $3.50

alicia bought a notebook and several erasers at the student store. the graph shows the relationship between the total cost of her items and the number of erasers she purchased. what is the cost of each eraser? $1.00 $1.50 $2.00 $3.50

Answer

Explanation:

Step1: Identify two points on the line

We can take the points (0, 2) and (2, 5). The y - intercept (when number of erasers = 0) is the cost of the notebook, which is $2.

Step2: Calculate the slope

The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$. Here, $x_1 = 0,y_1 = 2,x_2=2,y_2 = 5$. So $m=\frac{5 - 2}{2-0}=\frac{3}{2}=1.5$. The slope represents the cost per eraser.

Answer:

$1.50$