Given the equation y=-3x+2.5: When x is 1, what value of y makes the equation true? When x is -1.5, what value of y makes the equation true? When y is 8.5, what value of x makes the equation true?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.

James was playing a game with his friends. he won 35 points. then he lost 15, lost 40 and won 55. how did he come out