Functions (general)

How do you find the y-intercept for a rational function?

• Divide numerator by denominator.

• Evaluate f(0).

• Set the denominator = 0 and solve.

• Set the numerator = 0 and solve.

^{What is the linear zero of the function graphed?}

• -1

• -2

• -2/1

• (0,-1)

• (0, -3)

• (0, 0)

• ( 0, 3)  

• none

Find the x-intercept(s) of  $f\left(x\right)=\frac{\left(x-2\right)\left(x+5\right)}{\left(x-6\right)\left(x+1\right)}$  

•  $\left(6,0\right),\ \left(-1,0\right)$  

•  $\left(\frac{5}{3},0\right)$  

•  $\left(2,0\right),\ \left(-5,0\right)$  

Identify the x-intercepts. 
 $y=\frac{x^2-1}{2x^2+8x+6}$  

•  $\left(1,\ 0\right)$  

•  $\left(0,\ 1\right)$   and  $\left(0,\ -1\right)$  

•  $\left(0,\ -\frac{1}{6}\right)$  

•  $\left(\frac{1}{6},\ 0\right)$  

What is the x-Intercept (zeros)?

• x= 6

• x= 2

• x= -3

• x= -1

The y-intercepts of a rational function are:

• the value of f(0)
• the real zeros of the numerator
• always zero
• the real zeros of the denominatior

What is another way to describe the zero(s) of a function?

• The y-intercepts. When x = 0.

• The x-intercepts. When y = o.

• The asymptotes.

• (9, 0) and (2, 0)

• (-9, 0) and (-2,0)

• (-4, 0) and (3, 0)

• (4, 0) and (-3,0)

• 1

• -2/3

• none

• -2