Answer:
[tex]n = 8[/tex]
Step-by-step explanation:
Slope = (change in y-values)/(change in x-values)
[tex]\frac{-1}{2} = \frac{13 - n}{-7-3}[/tex]
[tex]-1(-7 - 3) = 2(13 -n)[/tex]
[tex]-1(-10) = 26 - 2n[/tex]
[tex]10 = 26 - 2n[/tex]
[tex]10 - 26 = -2n[/tex]
[tex]-16 = -2n[/tex]
[tex]\frac{-16}{-2} = \frac{-2n}{n}[/tex]
[tex]8 = n[/tex]
