The following table shows $\left(x, \; y\right)$ values for a linear function. What is the slope of this function?
A. $6$
B. $2$
C. $12$
D. $9$
E. $1$
| $x$ | $y$ |
| 2 | 15 |
| 4 | 27 |
| 7 | 45 |
| 10 | 63 |
A. $6$
B. $2$
C. $12$
D. $9$
E. $1$
