Quiz about Math9_Q2_A

Question 1

What two quantities increase at the same time or decrease at the same time?

Accepted Answer

Direct Variation

Answer

Joint Variation

Answer

Inverse Variation

Answer

Combined Variation

Question 2

A variation that shows that one quantity is increasing while the other is decreasing.

Accepted Answer

Inverse Variation

Answer

Direct Variation

Answer

Joint Variation

Answer

Combined Variation

Question 3

What is the formula for the Joint Variation?

Accepted Answer

$$y\ =\ kxz$$

Answer

$$y\ =\ kx$$

Answer

y = $$\frac{k}{x}$$

Answer

y = $$\frac{kx}{z}$$

Question 4

What is the formula for the Combined Variation?

Accepted Answer

$$y\ =\ \frac{kx}{z}$$

Answer

$$y\ =\ kx$$

Answer

$$y\ =\ \frac{k}{x}$$

Answer

$$y\ =\ kxz$$

Question 5

The fare F of a passenger varies directly as the distance d of his destination. What is the equation of this variation?

Accepted Answer

$$F\ =\ kd$$

Answer

$$F\ =\ d$$

Answer

$$F\ =\ \frac{1}{d}$$

Answer

$$F\ =\ kxd$$

Question 6

The number of pizza slices p varies inversely as the number of persons n sharing a whole pizza. What is the equation of this variation?

Accepted Answer

$$p\ =\frac{k}{n}$$

Answer

$$p\ =\ kn$$

Answer

$$n\ =\ kp$$

Answer

$$n\ =\ \frac{k}{p}$$

Question 7

The value of the constant has already been identified, what is the next thing to do?

Accepted Answer

Find the equation

Answer

Solve for what is asked

Answer

Find the value of k

Answer

The constant is the final answer

Question 8

If y varies directly as x and y = 24 when x = 6, find y when x = 2.

Accepted Answer

8

Answer

2

Answer

6

Answer

12

Question 9

If y varies inversely as x and y = 3 when x = 4, find y when x = 6.

Accepted Answer

2

Answer

6

Answer

9

Answer

12

Question 10

If z varies jointly as x and y and z = 60 when x = 5 and y = 6, find z when x = 3 and y = 1.

Accepted Answer

6

Answer

3

Answer

9

Answer

12

Question 11

If z varies directly as x and inversely as y, and z = 9 when x = 6 and y = 2, find z when x = 8 and y = 12.

Accepted Answer

2

Answer

6

Answer

9

Answer

18

Question 12

If y varies inversely as x and y = -3 when x = -4, find x when y = -2.

Accepted Answer

-6

Answer

-2

Answer

2

Answer

6

Question 13

If y varies inversely as x and y = -2 when x = -8, find x when y = 4.

Accepted Answer

4

Answer

1

Answer

$$\frac{1}{4}$$

Answer

$$-\frac{1}{4}$$

Question 14

A teacher chargers Php 500.00 per hour of tutorial service to a Grade 9 student. If she spends 3 hours tutoring per day, how much would she receive in 20 days?

Accepted Answer

Php 30,000

Answer

Php 15,000

Answer

Php 25,000

Answer

Php 40,000

Question 15

$$\left(y^2\right)\left(y^3\right)\ =\ y^{2+3}=\ y^5$$ , what law of exponent is being illustrated?

Accepted Answer

Product of Power

Answer

Power of Product

Answer

Quotient of Power

Answer

Power of a powe

Question 16

This law of exponent states that if any number is raised to zero the answer will always be 1, what law of exponent is this?

Accepted Answer

Zero Exponent

Answer

Product of Power

Answer

Negative Exponent

Answer

Quotient of Power

Question 17

Simplify: $$12x^0$$

Accepted Answer

12

Answer

1

Answer

x

Answer

0

Question 18

Simplify: $$7^{-1}$$

Accepted Answer

$$\frac{1}{7}$$

Answer

1

Answer

7

Answer

-7

Question 19

Simplify: $$10^0\ +\ 10$$

Accepted Answer

11

Answer

10

Answer

100

Answer

101

Question 20

$$\frac{120a^5b^6c^{-5}}{12a^{-2}b^0c^2}$$ , apply the laws of exponent to simplify.

Accepted Answer

$$\frac{10a^7b^6}{c^7}$$

Answer

10abc

Answer

12abc

Answer

$$\frac{c^7}{10a^7b^6}$$

Math9_Q2_A

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