Writing Equations From Graphs...3

[nycmathguy]

Section 1.7
Question 48

See attachment.

48a.

The general form is y = ax^3.

Use the given point to find a.

2 = a(2)^3

2 = 8a

2/8 = a

1/4 = a

f(x) = (1/4)x^3

48b.

The general form is y = ax^3.

Use the given point to find a.

-2 = a(1)^3

-2 = a

f(x) = -2x^3.

You say?

 

[MathLover1]

correct

 

[nycmathguy]

correct

It was fun graphing all these functions by hand. It brought back lots of memories of my youth and school days.