3 years ago

What are the two way to test to see if a relation is a function

Mathematics

1 answer:

Lerok [7]3 years ago

7 0

Answer:

Identify the input values. Identify the output values.

Step-by-step explanation:

Hope this helped! :)

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The length of a rectangle is twice it’s width if the perimeter of the rectangle is 54 cm

castortr0y [4]

Width = 9cm

Length = 18cm

<u>Explanation:</u>

Let width = b,

So, length = 2b

Perimeter of rectangle = 2x(length + width)

According to the question,

$54cm = 2X(2b + b)\\54cm = 2X(3b)\\27cm = 3b\\b = 9cm$

Hence,

Width = 9cm

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4 years ago

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iren2701 [21]

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3/4 x

Step-by-step explanation:

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3 years ago

The following table shows a proportional relationship between x and y.

RUDIKE [14]

Answer:

Assume x is directly proportional to y :

$y \: \alpha \: x \\ y = kx$

when y is 9, x is 2:

substitute to find value of k :

$9 = (k \times 2) \\ k = \frac{9}{2}$

Therefore, equation is:

${ \boxed{ \boxed{2y = 9 x}}}$

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3 years ago

Helppp I’m having problems with fractions

AysviL [449]

Answer:

The fourth one

Step-by-step explanation:

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Mr. randall bought 4 shirts, which were on sale. the shirts were originally priced $20. the salres price of the shirts was $5 do

USPshnik [31]

Answer:

The price Mr. Randall paid = 4 * (20-5)

Step-by-step explanation:

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