Point $\pink{A}$ is at $(-3, 7.5)$ and point $\blue{B}$ is at $(6, -10)$.
If point $\purple{M} = (1 - t)\pink{A} + t\blue{B} = (2.4, -3)$, what is the value of $t$? [[☃ math-keypad 1]]
You can use the interactive diagram below to help you :
[[☃ iframe 1]]