Write the equation in point-slope form given the following information. 7) A graph that has a slope of 3 and passes through the point (1,4)

8) A graph that has a slope of -2 and passes through the point (4, -2)

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

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) = .

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1