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Butoxors [25]
3 years ago
11

Write a function to represent the set of ordered pairs. {(2, -2), (3, 8), (4, 22), (5, 40)}

Mathematics
1 answer:
natali 33 [55]3 years ago
4 0

Answer:

y = 2x² - 10

Step-by-step explanation:

We must find a pattern in the numbers. Set out the numbers in a table (Columns 1 and 2 in the table).

<u>x</u>    <u> y</u>    <u>y/2</u>    <u>y/2 + 5 </u>

2   -2      -1           4

3    8       4           9

4  22      11          16

5  40    20         25

It looks like all y-values are multiples of 2.

Let's divide them by 2 (Column 3).

The numbers don't increase evenly. We may have a quadratic function.

If we add 5 to each quotient, we get a set of values equal to x² (Column 4).

y/2 +   5 = x²

y     + 10 = 2x²

y            = 2x² - 10

The function is y = 2x² - 10.

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Answer:

The amount of time it takes to ride 26 miles is 2.89 hours.

Step-by-step explanation:

Given : You ride your bike at 9 miles per hour.

To find : How long it will take you to ride 26 miles ?

Solution :

The equation given is 9\times t=26

Using distance formula,

\text{Distance}=\text{Speed}\times \text{Time}

According to formula t represent the time taken to cover the distance.

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The number of miles you've traveled so far is 26 miles.

Solving the equation,

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t=\frac{26}{9}

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4 years ago
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Oksana_A [137]

Answer:

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Step-by-step explanation:

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3 years ago
If f(x)=×^2-81andg(x)​
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9514 1404 393

Answer:

  the correct choice is marked

Step-by-step explanation:

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I am joyous to assist you anytime.

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