Question 402729
Consider the parabola with equation f(x)= -x^2-2x+15
(a) Does the parabola open up or down?
Down, the x^2 term is negative.
---------------
(b) What is the equation for the axis of symmetry for the parabola?
x = -b/2a = 2/(-2)
x = -1
---------------
(c) What are the coordinates of the vertex of the parabola?
It's (x,f(x)) on the line of symmetry.
f(-1) = 16
--> (-1,16)
-------------------
(d) What is the y-intercept of the parabola?
f(0) = 15 or (0,15)
--------------
(e) Determine the x-intercepts if there are any.
*[invoke solve_quadratic_equation -1,-2,15]
---------------------------------
(f) Sketch a graph of the parabola.
dl the FREE graph software at
http://www.padowan.dk