Ch. 2 Test

Find the Zeros. fx=3x²+22x-16

(2/3,0) (-8,0)

Find values for which fx=0. fx=x²-5x+6

(3,0) (2,0)

Find values for which fx=gx. fx=x²-1 gx=-x²+x+2

(3/2,0) (-1,0)

find the average rate of change of the function from x1-x2 fx= (-√x-2)+5 x1=3 x2=11

-1/4

Find the average rate of change of the function from x1-x2. Fx=3x+2 x1=0 x2=3

3

Graph this function. When does it increase, decrease, remain constant? hx=x√x+3

Increase- (-2,infinity) Decrease-(-3,-2) Constant-Never

Graph this function. When does it increase, decrease, remain constant? gx=x

Increase-(-∞,∞) Decrease-Never Constant-Never

Determine whether the equation represents y as a function of x. x²+y²=4

No.

Is -x+y²=1 a function?

No.

Determine whether a function is odd, even or neither: fx=x³-3x

Origin symmetry, odd function.

Determine whether the equation represents y as a function of x. y+5=0

Yes, y=-5

Determine whether the equation represents y as a function of x. y=|4-x|

Yes.

Is x²+y=1 a function?

Yes.

Find the domain. Write in interval notation. gx=√9-x²

[-3,3]

Find the domain. Write in interval notation. fx=√3x-2

[2/3, infinity)

Find the domain of the function. ht=4÷t

all reall numbers except 0

Find the domain of the function. fx=5x²+2x-1

because fx is a polynomial, domain is all real numbers

What is the average rate of change function?

f(x1)-f(x2) over x1-x2

Determine whether a function is odd, even or neither: fx=3x²-2x

neither

find the value(s) of x for which fx =gx. fx=x², gx=x+2

x=2, x=-1 x²-x+2= x-2, x=-1

Find all real values of x such that fx =0. f(x)= 15-3x

x=5

Determine whether a function is odd, even or neither: fx=x⁴+3x²

y-axis symmetry, even function