Learn To Be brings free online tutoring students around the United States. Volunteer and gain community service hours while helping students who need it./p>

Weighted averages

Point A\pink{A} is at (8,7.5)(-8, 7.5) and point B\blue{B} is at (6,3.5)(6, 3.5).
If point M=(1t)A+tB=(4.5,6.5)\purple{M} = (1 - t)\pink{A} + t\blue{B} = (-4.5, 6.5), what is the value of tt?
You can use the interactive diagram below to help you :