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3(x + y) = y If (x, y) is a solution to the equation above a...
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3(x + y) = y

If (x, y) is a solution to the equation above and y ≠ 0, what is the ratio x/y ?

A) − 4/3

B) − 2/3

C) 1/3

D) 2/3

2.1K
adeb
adeb
Reputation: 885
School not set, Nigeria
30 December 2020
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1 answer(s)
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judziy
judziy
Reputation: 3.0K
University of Benin, Nigeria
30 December 2020
0

3(x + y) = y

open-up the bracket on the Left Hand Side by multiplying each term by 3

3x + 3y = y

collect like term

3x = y - 3y

3x = -2y

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divide both sides by 3

x = -2/3 y

divide both sides by y

x/y = -2/3

Answer: B

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peter
peter
Answered
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2y - x = −19

What is the solution (x, y) to the system of equations above?

A) (−5, −2)

B) (3, −8)

C) (4, −6)

D) (9, −6)

See Answer
peter
peter
Answered
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Kathy is a repair technician for a phone company. Each week, she receives a batch of phones that need repairs. The number of phones that she has left to fix at the end of each day can be estimated with the equation P d = 108 − 23 , where P is the number of phones left and d is the number of days she has worked that week. What is the meaning of the value 108 in this equation?

A) Kathy will complete the repairs within 108 days.

B) Kathy starts each week with 108 phones to fix.

C) Kathy repairs phones at a rate of 108 per hour.

D) Kathy repairs phones at a rate of 108 per day.

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adeb
adeb
Answered
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y = x2 − 4x + 3

y = x − 1

If (x, y) is a solution to the system of equations above, what is one possible value of the product of x and y ?

See Answer
peter
peter
Answered
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What are the solutions of the quadratic equation 4x2 - 8x -12 = 0 ?

A) x = −1 and x = −3

B) x = −1 and x = 3

C) x = 1 and x = −3

D) x = 1 and x = 3

See Answer
adeb
adeb
Answered
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Which of the following is a solution to the equation 2x2 + 4x = 3 + 3x2 ?

A) −1

B) 0

C) 3

D) 6

See Answer