Quiz- Rational Functions Inverse Variation

Does the table show an inverse variation?

• Yes
• No

Given that y varies inversely with x, if x =7 and y = 4, what is y when x = 2?

• 14
• 10
• 2
• -14

Given (32, 15) and (12, y). Find the constant k, and then use the equation to find the missing y value.

• 40
• 48
• -40
• -48

The current in a simple electrical circuit is inversely proportional to the resistance. If the current is 80 amps when the resistance is 50 ohms, find the current when the resistance is 22 ohms.

• 90 amps

• 100 amps

• 105 amps

• 120 amps

The number of men needed to dig a hole varies inversely with the time it takes to dig a hole. If 12 men can dig a hole in 8 days, then how many men can dig it in 6 days?

• 14 men

• 16 men

• 18 men

• 20 men

Does the table represent an inverse variation

• No

• Yes

What are the asymptotes?

• x = -3        y = 1  
• x = 3         y = 1
• x = -3        y = -1
• x = 3         y = -1

What are the asymptotes?

• x = -1         y = -3
• x = 1          y = -3
• x = -1         y = 3
• x = 1          y = 3

What is the horizontal asymptote? 

• x = 2
• x = 7
• y = 2
• y = 7

What is the vertical asymptote? 

• x = 2
• x = 7
• x = -2
• x = 5