Module 9 quiz review

$$y=\frac{-4.2}{x}$$  

y= -.7

$$y=-72x$$  

y=-432

$$y=\frac{-72}{x}$$  

y=-12

$$y=-4.2x$$  

y= -25.2

I. Direct, k=1.5

II. Inverse, k= 7.5

III. neither

IV. Inverse, k=3

I. Direct, k=1.5

II. Inverse, k= 7.5

III. Inverse, k=100

IV. Direct, k=3

I. Inverse, k=1.5

II. Direct, k=7.5

III. neither

IV. Inverse, k=3

I. Inverse, k=1.5

II. Direct, k=7.5

III. Inverse, k=100

IV. Inverse, k=3

k=21.875

$$y=21.875x$$  

y=437.5 pounds

k=21.875

$$y=\frac{21.875}{x}$$  

y=1.36 pounds

k=5600

$$y=5600x$$  

y=112000 pounds

k=5600

$$y=\frac{5600}{x}$$  

y=280 pounds

 $f\left(x\right)=\frac{4}{x-5}-3$ 

 $f\left(x\right)=\frac{4}{x+5}-3$ 

 $f\left(x\right)=\frac{4}{x+3}-5$ 

 $f\left(x\right)=\frac{4}{x-3}-5$ 

Left 1, up 2.

Right 1, up 2

Left 1, down 2

Right 1, down 2

 $\left(-\infty,\infty\right)$ 

 $\left(-\infty,\ -1\right)U\left(-1,\ \infty\right)$ 

 $\left(-\infty,\ -1\right)U\ \left(-1,\ 2\right)U\ \left(2,\ \infty\right)$ 

 $\left(-\infty,2\right)U\left(2,\ \infty\right)$  

x=-1

y=2

(-3, 0)

(0,6)

x=2

y=-1

(0, -3)

(6,0)

x=4

y=-1

(0, -3)

(0,6)

x=-1

y=2

(0, -3)

(6,0)

 $\left(-\infty,\infty\right)$ 

 $\left(-\infty,\ -3\right)U\left(-3,\infty\right)$ 

 $\left(-\infty,\ -4\right)U\left(-4,\infty\right)$ 

 $\left(-\infty,\ -4\right)U\ \left(-4,\ -3\right)U\ \left(-3,\infty\right)$ 

Hole: x= -4

VA: x= -3

HA y=o

Hole: x= -3

VA: x= -4

HA none

Hole: x= -3

VA: x= -4

HA y=o

Hole: x= -4

VA: x= -3

HA none

 $y=x^2-5$ 

 $y=x^2+1$ 

 $y=\left(x^2+1\right)\left(x+5\right)$ 

 $y=\left(x+1\right)\left(x-1\right)$