Question

a bowl starts with 7 milliliters of water in it. kelly is dropping marbles into the bowl one at a time. she records the volume in the bowl after each marble is dropped in. the graph below shows the relationship between the number of marbles and the volume in the bowl. what is the slope of the line? slope = \boxed{}

Explanation:

Step1: Identify two points on the line

Choose $(x_1,y_1)=(0,7)$ and $(x_2,y_2)=(4,20)$

Step2: Apply slope formula

Slope formula: $\text{slope} = \frac{y_2 - y_1}{x_2 - x_1}$
$\text{slope} = \frac{20 - 7}{4 - 0} = \frac{13}{4}$

Answer:

$\frac{13}{4}$ or $3.25$