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If y varies directly as x, and y is 180 when x is n and y is n when x is 5, what is the value of n?

source : socratic.org

If y varies directly as x, and y is 180 when x is n and y is n when x is 5, what is the value of n?

Let’s write a proportion to represent this problem!

1. When #y = 180#, #x = n#. If we write the value of y on the top and x on the bottom, one side of the proportion is:

#180/n#

2. When #y = n#, #x = 5#. So the other side of the proportion would be:

#180/n = n/5#

3. Cross multiply.

#180(5) = n(n)##900 = n^2#

4. Take the square root of both sides to find #n#.

#sqrt(900) = sqrt(n^2)#

#30 = n#

That’s your answer!

Check to make sure the proportion makes sense.

Does #180/30# equal #30/5#?

If y varies directly as x, and y is 180 when x is n and y

If y varies directly as x, and y is 180 when x is n and y – If y varies directly as x, and y is 180 when x is n and y is n when x is 5, what is the value of n? – 2611672 1. Log in. Join now. 1. Log in. Join now. Ask your question. swimmer2017 swimmer2017 01/13/2017 Mathematics High School +5 pts. AnsweredIf y varies directly with x and y = 20 y = 20 when x = 8 x = 8, find the equation that relates x and y. Solution. Try It 8.180. If y y varies inversely with x x and y = 8 y = 8 when x = 2 x = 2 find the equation that relates x x and y y. A car's value varies inversely with its age. Elena bought a two-year-old car for $20,000.If y varies directly as x, and y is 180 when x is n and y is n when x is 5, what is the value of n? 30 If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?

8.9 Use Direct and Inverse Variation – Elementary Algebra – The following practice problem has been generated for you: y varies directly as x, and y = 20 when x = 29, solve for y when x = 20If y varies directly as x, and y=2 when x=8, what is y when x=2? 6. shows the relationship between the x-value and y-value in direct and inverse variations. plug in (0,0) or solve for y. see if the graph is a straight line that passes through the origin. 180. Three pipes take 1 hour to water the football field. How many minutes would itIf y varies directly with x, and y=2 when x=8, what is y when x=2? 6. shows the relationship between the x-value and y-value in direct and inverse variations. direct variation equations. y=3x; y=0.4x are examples of— 180. Three pipes take 1 hour to water the football field. How many minutes would it take one pipe to water the field?

8.9 Use Direct and Inverse Variation - Elementary Algebra

Rate of change Flashcards | Quizlet – If y varies directly as x, and y is 180 when x is n and y is n when x is 5, what is the value of n? A.6 B.18 C.30 D.36 – 8138283If we write the value of y on the top and x on the bottom, one side of the proportion is: 180 n 2. When y = n, x = 5.What is the direct variation equation if y varies directly with x, and #y=7.5# when #x=2.5#? What is the direct variation equation if y varies directly with x, and #y=2# when #x=4#? See all questions in Direct Variation Impact of this question. 6786 views around the world

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