Answer:
m = -1
Step-by-step explanation:
[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}\\\\\left(x_1,\:y_1\right)=\left(2,\:-5\right),\\\:\left(x_2,\:y_2\right)=\left(4,\:-7\right)\\\\m=\frac{-7-\left(-5\right)}{4-2}\\\\m = \frac{-7+5}{4-2}\\ \\m = \frac{-2}{2}\\ \\Simplify\\\\m =-1[/tex]
