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3 years ago

13

How do you identify the constant of proportionality when given an equation?

1 answer:

STatiana [176]3 years ago

8 0

The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other. Once you know the constant of proportionality you can find an equation representing the directly proportional relationship between x and y, namely y=kx, with your specific k. (i looked up this explanation but not sure if it’s right.. if it’s wrong let me know:) )

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Thirty-five percent of what number is 10.5?

erastovalidia [21]

30% of 35 = 10.5

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3 years ago

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Black_prince [1.1K]

Answer:

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3 years ago

Luigi is an urban planner. As an independent contractor, he charges a $140 fee plus $25 per hour for

Anuta_ua [19.1K]

Answer:

Function: $y=140+25x$

Amount earned for 10 hours of work: $\$390$

Step-by-step explanation:

Let be "x" the number of hours worked on a project and "y" the total amount Luigi charges for a project.

Based on the data given in the exercise, you can identify that:

$140 is a fixed amount.
For each hour worked on the project, Luigi charges $25. This can be expressed as: $25x$

Then, the total amount he charges for a project is the sum of $140 and $25x$ . This can be represented with the following function:

$y=140+25x$

To calculate the amount of money earned for 10 hours of work, you must substitute $x=10$ into the function and evaluate. Then:

$y=140+25(10)\\\\y=390$

7 0

3 years ago

What is the y-coordinate of the midpoint of the line segment of (-4,13) and (18,-3.5)

Nady [450]

The midpoint is (7,4.75) so the y-coordinate should be y=4.75. I hope that helps

4 0

3 years ago

First right=brainliest:)))

Sophie [7]

Answer:

-4,7

Step-by-step explanation:

add both to get y=7

then sub y in 2 to get 8x+42=10

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3 years ago