Answer:
![\boxed {\tt m=9}](https://img.qammunity.org/2021/formulas/mathematics/high-school/472yv2bl0vl2nmu5bjp7z60l1pfu68nawj.png)
Explanation:
The slope formula is:
![m=(y_2-y_1)/(x_2-x_1)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/e9lgdayfzr27dyurvzbw9lffpiv7535tiv.png)
where (x₁, y₁) and (x₂, y₂) are the points the line passes through.
The points given are: (-7,-2) and (-6,7). Therefore,
![x_1= -7 \\y_1= -2 \\x_2=-6 \\y_2= 7](https://img.qammunity.org/2021/formulas/mathematics/high-school/i59x4lvpgad2ftda9d03xxpcgqjatue42t.png)
Substitute the values into the formula.
![m=(7--2)/(-6--7)](https://img.qammunity.org/2021/formulas/mathematics/high-school/my4ic3w2c9gpdms0dalowzeufdu5e449c2.png)
![m=(7+2)/(-6+7)](https://img.qammunity.org/2021/formulas/mathematics/high-school/3tfgk8xf4xte3ijivobyt8ohppb5vi69az.png)
Solve the numerator by adding 7 and 2.
![m=(9)/(-6+7)](https://img.qammunity.org/2021/formulas/mathematics/high-school/a239as761bjqsxmopccigrpetnk8qeplrg.png)
Solve the numerator by adding 7 to -6.
![m=(9)/(1)](https://img.qammunity.org/2021/formulas/mathematics/high-school/kg3twof6py1ilmjv80dhfkp8jbq59eeww6.png)
Divide 9 by 1.
![m=9](https://img.qammunity.org/2021/formulas/mathematics/middle-school/mlaagf72f8bwavlkx2dqdce6acyha0jv58.png)
The slope of the line is 9.