Answer to Question #11353 in Abstract Algebra for marcus

Question

find an equation of the line passing through the given points
use function notation to write the equation
(-1,8) and (-2,13)

Answer 1

(y-8)/(13-8)=(x-(-1))/(-2-(-1))
(y-8)/5=(x+1)/(-1)
8-y=5(x+1)
y=y(x)=-5x+3