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3 years ago

Tell whether x and y show direct variation.Explain your reasoning.If so, find k #3

Mathematics

2 answers:

WINSTONCH [101]3 years ago

7 0

Answer:

x and y do not show direct variation.

Step-by-step explanation:

The formula for direct variation is

y = kx Divide each side by y

k = y/x

k should have the same value for every point except, of course, (0,0)

For the first point,

k = 2/(-1) = -2

For the third point,

k = 2/1 = 2

The values of k are different, so x and y do not show direct variation.

NikAS [45]3 years ago

3 0

Answer:x and y do not show direct variation.

Step-by-step explanation:

The formula for direct variation is

y = kx Divide each side by y

k = y/x

k should have the same value for every point except, of course, (0,0)

For the first point,

k = 2/(-1) = -2

For the third point,

k = 2/1 = 2

The values of k are different, so x and y do not show direct variation.

Read more on Brainly.com - brainly.com/question/11833516#readmore

Step-by-step explanation:

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3 years ago

How much will it cost to carpet a rectangular room measuring 13.4 m by 24 m if carpeting costs $24.99 per square meter?

brilliants [131]

Answer:

$8036.784

Step-by-step explanation:

It is easy

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3 years ago

What is the domain of the function represented by the graph?

dezoksy [38]

Answer: Choice C. $x \ge -3$

============================================

Explanation:

The domain is the set of all allowed x inputs.

Here we see that x = -3 is the smallest x value possible as it is from the left-most point. The graph goes on forever to the right, so there is no largest x value. Effectively infinity is the largest x value even though infinity is not a number.

We can say the domain is $-3 \le x < \infty$ which can be simplified to $-3 \le x$ or $x \ge -3$