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Shkiper50 [21]
3 years ago
5

What is the slope of the line that passes through the points (−4,−2) and (−4,−22)? Write your answer in simplest form.

Mathematics
2 answers:
Yuki888 [10]3 years ago
7 0

Answer:

Undefined Slope

Step-by-step explanation:

If we look at the points given, then we can see that the X coordinates are the same. Putting this into (y2-y1)/(x2-x1), we can see that the denominator would be 0, meaning the slope would be undefined.

GREYUIT [131]3 years ago
5 0

Answer:

undefined

Step-by-step explanation:

1) y₂-y₁/x₂-x₁

2)-22 -(-2)/ -4 -(-4)

3) -20/0

4) slope is undefined so there is only one line (same x coordinate)

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3 years ago
A teacher wants to see if a new unit on factoring is helping students learn. She has five randomly selected students take a pre-
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Answer:

Step-by-step explanation:

Given the sample data

Pre-test... 12 14 11 12 13

Post-Test 15 17 11 13 12

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The standard deviation of pre-test

S.D = √Σ(X-x)² / n

S.D = √[(12-12.4)²+(14-12.4)²+(11-12.4)²+(12-12.4)²+(13-12.4)² / 5]

S.D = √(5.2 / 5)

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The mean of post-test

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x' = 13.6

The standard deviation of post-test

S.D' = √Σ(X-x)² / n

S.D' = √[(15-13.6)²+(17-13.6)²+(11-13.6)²+(13-13.6)²+(12-13.6)² / 5]

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μ-μ' = -1.539

Then, μ ≠ μ'

We can calculate our P-value using table.

This is a two-sided test, so the P-value is the combined area in both scores.

The p-value is 0.172

The p value > 0.1

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