Consider the graph of f(x) below.

https://northbranchsd.owschools.com/media/o_advalg_2015/2/img_g_alg02u09c03l20d_03.gif

Write the equation of f(x), and classify the function as linear, quadratic, cubic, exponential, or logarithmic.

Question

Consider the graph of f(x) below.

https://northbranchsd.owschools.com/media/o_advalg_2015/2/img_g_alg02u09c03l20d_03.gif

Write the equation of f(x), and classify the function as linear, quadratic, cubic, exponential, or logarithmic.

anonymous · Answer

@jango_IN_DTOWN @amistre64 @satellite73 @ganeshie8 @Michele_Laino

anonymous · Answer

@Lily2913 @ParthKohli @nincompoop @pooja195

anonymous · Answer

@CookieMonster18

jango_in_dtown · Answer

the curve cuts the x axis at the points -1,1,3
so  it is cubic the equation is (x+1)(x-1)(x-3)=0
i.e (X^2-1)(x-3)=0 i.e. x^3-3x^2-x+3=0

amistre64 · Answer

well, any scaled version of that has the same roots ... 

k(x+1)(x-1)(x-3)=0 is the family of cubics with those roots.

amistre64 · Answer

when x=0 it appears we are at 3 so k=1 is a fair assumption