a) Find the zeros and y-intercept
b) Describe where the function is positive or negative
c) Describe where the function is increasing or decreasing
d) Describe the end behavior.
e) Sketch a graph of the function
1)
f ( x ) = ( x + 1 ) ( x − 2 ) ( 3 x − 1 )
A.) f (x) = (x+1) x (x-2) x (3x-1)
f(0) = (0 + 1) x ( 0-2) x(3x0-1)
f(0) = 1(0-2) x 3x0-1)
f(0)= 1x (-2) x (3x0-1)

2)
f ( x ) = 2 x ( x 2 − 16 )

3)
f ( x ) = ( 2 x 2 − 9 x − 5 ) ( 9 x 2 − 16 )

4)
f ( x ) = ( x 2 + 3 x + 2 ) ( 8 x 2 − 10 x − 7 )

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno step statement reason 1 ∠oln ≅ ∠lno given 2 draw oe as a perpendicular bisector to ln by construction 3 ∠leo ≅ ∠neo transitive property of equality 4 m∠leo = 90° definition of a perpendicular bisector 5 m∠neo = 90° definition of a perpendicular bisector 6 le ≅ en definition of a perpendicular bisector 7 δole ≅ δone side-angle-side (sas) postulate 8 ol ≅ on cpctc nina made two errors in the proof. identify and correct the errors.