Answer:
2:3
Step-by-step explanation:
let the ratio be k:1
[tex]-1=\frac{2k+1(-3)}{k+1}\\-k-1=2k-3\\2k+k=-1+3\\3k=2\\k=\frac{2}{3}\\so~ratio~is~\frac{2}{3}:1\\or~2:3[/tex]
[tex]\frac{-12}{5}=\frac{2(0)+3(-4)}{2+3}\\or~-12=0-12\\-12=-12[/tex]
which is true.
