What's x - y (x = 5, y = -5)​

Which best explains why this triangle is or is not a right triangle ?

Find each value of the five-number summary for this set of data. [note: type your answers as numbers. do not round.] 150, 120, 136, 180, 158, 175, 124, 162 minimum maximum median upper quartile lower quartile

Write the equation in general quadratic form: plz !