Unit 3 '- Quadratric Functions - Im3 Lesson 3: Working With Quadratic Models In Vertex Form Worksheet Page 3

IM3 -‐ L esson 3 : W orking w ith Q uadratic M odels I n V ertex F orm Unit 3 – Q uadratric F

unctions

D. Quadratic A lgebra: W orking w ith V ertex F orm ( Example # 1)

To s ketch t he p arabola d efined b y f (x) = -‐ 2(x + 3 )

+ 1 2:

(i) S tate t he e quation o f t he a xis o f s ymmetry.

(ii) S tate t he l ocation o f t he v ertex.

(iii) E valuate f (0)

(iv) E valuate f (-‐7)

(v) S tate t he l ocation o f a p oint “ symmetrically o pposite”

to t he y -‐intercept

(vi) S olve f or x i f f (x) = 0 . R ound y our a nswer(s) t o t wo

(vii) S olve f (x) = -‐ 60

decimal p laces

(viii) W rite t he e quation o f t he I NVERSE f unction o f f (x) a nd

-‐1

write i t i n f

(x) n otation.

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