contestada

Malena is in a book club. The graph shows a proportional relationship between the number of the books Malena has read and the number of the years she has been in the club.

Malena is in a book club The graph shows a proportional relationship between the number of the books Malena has read and the number of the years she has been in class=
Malena is in a book club The graph shows a proportional relationship between the number of the books Malena has read and the number of the years she has been in class=

Respuesta :

Given:

There are given the graph to find the slope:

Explanation:

To find the slope, we need to select two intersecting points.

So,

The two points are:

[tex](2,30),(4,60)[/tex]

Now,

From the formula to find the slope:

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Then,

[tex]\begin{gathered} m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\ m=\frac{60-30}{4-2} \\ m=\frac{30}{2} \\ m=15 \end{gathered}[/tex]

So,

The slope of the given line is 15.

Final answer:

Hence, the correct option is D.