Friday
April 18, 2014

Homework Help: Exploring Quadratic Graphs

Posted by Emily on Tuesday, January 30, 2007 at 11:04pm.

ok, I totally did not get this question at all.

Complete each statement. Assume the variable a does not equal 0.

a. The graph of y=ax^2+c intersects the x-axis in two places when ______.
b. The graph of y=ax^2+c does not intersect the x-axis when ______.

------------------------------------------------------------

Plz somebody explain this to me. Any help is greatly appreciated!!!

This equation is a parabola. In order for it to intersect the x-axis in 2 places, the bottom point of the parabola has to be below the x-axis. Therefore, the point c, which is the minimum of the parabola (where x is 0) has to be less than 0. If c is >0, then it does not cross the x-axis, because the whole graph sits above the x-axis.

oh, i get it now!!! Thanx so so much! You guys help me out a lot!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

11th grade Algebra II - if the roots of ax^2+bx+c=0 are real, rational, and ...
science(HELP) - how do i make this graph? Graphs: Be able to correctly select ...
algebra - The cost of producing a number of items x is given by C = mx + b, in ...
algebra - im totally lost with my homework this is all gibberish to me. What are...
Calculus - Functions? - #1. A cubic polynomial function f is defined by f(x) = ...
math - Graph the quadratic functions y = -2x2 and y = -2x2 + 4 on a separate ...
math - Graph the quadratic functions y = -2x^2 and y = -2x^2 + 4 on a separate ...
math - Graph the quadratic functions y = -2x2 and y = -2x2 + 4 on a separate ...
math, algebra,graphs help - THe directions state: (A)Complete the table, (B) ...
Calculus - f(x) = (ax+b)/(x^2 - c) i) the graph of f is symmetric about the y-...

Search
Members