C31: Analyse and describe the characteristics of quadratic functions.
Originator: Nicole
Vertex: The vertex is the max or min part on the graph and is always X.X-intercept: The x intercept is where it crosses the x axis.
Y-intercept: The y intercept is where it crosses the y intercept,
and is also part 'c' in the equation. (2)
Z: Z is the same distance on each side of the vertex, it is a mirror image.
X-Intercept:
Vertex: -B
2A
Sample problem:
A) State the vertex of the following graph.
B) What is the y intercept?
C) What are the x intercept(s)?
Answers:
A) -b 2 = (2, -1)
2a 2(2/4)
B) Y= 2/4X^2-2X+1 Y- intercept = 1
C) X- intercept.
X-Intercepts are 3.4 and .6
Comments (1)
Anonymous said
at 8:07 pm on Mar 13, 2007
Nice work Nicole.
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