MATH PROBLEM I DON"T UNDERSTAND

Question

A line passes through the points (4,23)and(8,27) Write a linear function rule in terms of x and y for this line.

Answer 1

(4,23), (8,27)

y-23 = x-4 in point slope form

y= x + 19 in slope intercept form

x-y =-19 in standard form

x-y+19=0 in general form