Answer:
[tex]\frac{1}{3}[/tex]
Step-by-step explanation:
(3,12) (12,15)
[tex]\frac{y2-y1}{x2-x1}[/tex]
[tex]\frac{15-12}{12-3}[/tex] = [tex]\frac{3}{9}[/tex] = [tex]\frac{1}{3}[/tex]
