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Unit 5a Graphing Quadratics. Transformations of Quadratics in Vertex Form. Vertex Form for Quadratics. f(x) = a(x – h) 2 + k. f(x) = a(x – h) 2 + k. h is TRICKY! If h is POSITIVE then the graph moves LEFT. If h is NEGATIVE then the graph moves RIGHT. Axis of Symmetry: x = h

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Presentation Transcript
vertex form for quadratics
Vertex Form for Quadratics

f(x) = a(x – h)2 + k

slide4

f(x) = a(x – h)2 + k

h is TRICKY!

If h is POSITIVE then the graph moves LEFT.

If h is NEGATIVE then the graph moves RIGHT.

Axis of Symmetry: x = h

Special Case

If x is NEGATIVE inside then the graph reflects across the y-axis and h takes the sign you see.

If a is NEGATIVE then the graph reflects across the x-axis.

If |a| is less than 1, the graph SHRINKS.

If |a| is greater than 1 the graph STRETCHES.

If K is POSITIVE then the graph moves UP.

If k is NEGATIVE then the graph moves DOWN.

Vertex: (h, k)

negative on the inside what does this cause the graph to do
NEGATIVE on the INside, what does this cause the graph to do?

Reflect across the y

(h will be the same as it’s sign)

“y” am I in here

class work homework

Class Work/Homework

Vertex Form of a Quadratic WS

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