I need with these problems

Answer:
1. [tex]\frac{5}{6}[/tex]
3. [tex]\frac{7}{0}[/tex] (undefined slope)
5. [tex]-\frac{7}{4}[/tex]
7. [tex]24[/tex]
Step-by-step explanation:
slope (m)
rate of change (r)
1. m = [tex]\frac{y_2-y_1}{x_2-x_1}=\frac{8-3}{13-7} =\frac{5}{6}[/tex]
3. m = [tex]\frac{y_2-y_1}{x_2-x_1}=\frac{4-(-3)}{9-9} =\frac{7}{0}[/tex] (undefined slope)
5. m = [tex]\frac{y_2-y_1}{x_2-x_1}=\frac{-1-6}{0-(-4)} =\frac{-7}{4}=-\frac{7}{4}[/tex]
7. r = [tex]\frac{f(b)-f(a)}{b-a}=\frac{24-0}{1-0}=\frac{24}{1}=24[/tex]
Hope this helps!