Question

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1. Does the equation represent a direct variation> If so, find the constant variation.

5x = -3y (1 point)

a. no

b. yes; k = -5/3

c. yes; k = 5/3

d. yes; k = -3/5


2. Suppose y varies with x, and y = 10 when x=-3. What direct variation equation relates x and y? What is the value of y when x = -1? (1 pony)

a. y = -3/10 x; 3/10

b. y = 1/10 x; -3/10

c. y = 10/3 x; -10/3

d. y = -10/3 x; 10/3


3. Suppose y varies directly with x, and y = 8 when x = -6. What direct variation equation relates x and y? What is the value of y when x = -2? (1 po

Answer 1

Need help! Thank you.

1. Does the equation represent a direct variation> If so, find the constant variation.

5x = -3y (1 point)

a. no

b. yes; k = -5/3

c. yes; k = 5/3

d. yes; k = -3/5


2. Suppose y varies with x, and y = 10 when x=-3. What direct variation equation relates x and y? What is the value of y when x = -1? (1 pony)

a. y = -3/10 x; 3/10

b. y = 1/10 x; -3/10

c. y = 10/3 x; -10/3

d. y = -10/3 x; 10/3


3. Suppose y varies directly with x, and y = 8 when x = -6. What direct variation equation relates x and y? What is the value of y when x = -2? (1 point)

a. y = -0.75x; 1.50

b. y = -1.33xx; 2.67

c. y = 1.33x; -2.67

d. y = 0.13x; -0.25


4. The equation of the line on the graph below is is a direct variation equation. What is the constant variation?


Need help! Thank you.

1. Does the equation represent a direct variation> If so, find the constant variation.

5x = -3y (1 point)

a. no

b. yes; k = -5/3

c. yes; k = 5/3

d. yes; k = -3/5


2. Suppose y varies with x, and y = 10 when x=-3. What direct variation equation relates x and y? What is the value of y when x = -1? (1 pony)

a. y = -3/10 x; 3/10

b. y = 1/10 x; -3/10

c. y = 10/3 x; -10/3

d. y = -10/3 x; 10/3


3. Suppose y varies directly with x, and y = 8 when x = -6. What direct variation equation relates x and y? What is the value of y when x = -2? (1 point)

a. y = -0.75x; 1.50

b. y = -1.33xx; 2.67

c. y = 1.33x; -2.67

d. y = 0.13x; -0.25


4. The equation of the line on the graph below is is a direct variation equation. What is the constant variation?



a. 1/4

b. 1/2

c. 3/4

d. 1


5. For the data in the table, does y vary directly with x? If it does, choose an equation for the direct variation.


x y
8 11
16 22
24 33

a. yes; y = 2.75x

b. yes; y = 0.6875x

c. yes; y = 1.375x

d. no; y does not vary directly with x