1. Write the equation of the parabola that goes through the points plotted on the graph below. Equation: (2 pts]
(-2,7)
Justify any and all changes from the parent graph's equation
(y = x?) to your equation: 12 pts]
(4.1)
(
2-1)

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Answer asap evaluate 4-0.25g+0.5h4−0.25g+0.5h when g=10g=10 and h=5h=5.