exam Maths Puzzle Numerical Ability

Please help me solve this equation:

y^2=-8y

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exam Other Question

With a certain tail wind a jet air craft arrives at its destination 1,890 miles away in 3 hours. Flying against the same wind, the plane makes the return trip in 3 3/8 hours. Find the windspeed and airspeed. hi.i dont get how to find the second midpoint with the given midpoint, here is my question....T(6,2) [[this is 1st endpoint]]M(2,0)[[this is midpoint]] ???what is the 2nd endpoint.