Help please! any1 know this

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

Charlie tosses five coins.what is the probability that all five coins will land tails up.