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3 years ago

Find the slope of the line

Mathematics

2 answers:

Serhud [2]3 years ago

7 0

Answer:

Slope is undefined.

Step-by-step explanation:

Slope of 0 is a horizontal line.

Slope of undefined is a vertical line.

Any other slope is something in between.

Julli [10]3 years ago

4 0

Answer:

(A) undefined

Step-by-step explanation:

Here’s a little trick

If the line is horizontal, the slope is always 0

While if the line is vertical, the slope is always undefined.

In other words, if you can walk on the line, its 0 if you can’t its undefined

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3 years ago

The average price of homes sold in the U.S. in the past year was $220,000. A random sample of 81 homes sold this year showed a s

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Answer:

We conclude that there has been a significant decrease in the average price homes.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $220,000

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Sample size, n = 81

Significance level, α = 0.051

Population standard deviation, σ = $36,000

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 220000\text{ dollars}\\H_A: \mu < 210000\text{ dollars}$

We use One-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

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$z_{stat} = \displaystyle\frac{210000 - 220000}{\frac{36000}{\sqrt{81}} } = -2.5$

Calculating the p-value from the z-table, we have:

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We reject the null hypothesis and accept the alternate hypothesis. Thus, there has been a significant decrease in the average price homes.

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3 years ago

Find the slope of the line￼

Find the slope of the line