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Ksivusya [100]
3 years ago
9

What is the equation of the line that is parallel to the y–axis and passes through the point (3, 7)?

Mathematics
2 answers:
zubka84 [21]3 years ago
5 0
The equation of the line would’ve : Y=7x+3

Hope this helps!!
Levart [38]3 years ago
4 0

ANSWER

x = 3

EXPLANATION

If the equation is parallel to the y-axis, then its slope is undefined.

The equation of a line that is parallel to the y-axis and passes through

(x_1,y_1)

is given by:

x = x_1

The given line is parallel to the y-axis and passes through (3,7).

It's equation is

x = 3

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3 years ago
A College Alcohol Study has interviewed random samples of students at four-year colleges. In the most recent study, 494 of 1000
Vinil7 [7]

Answer:

The 95% confidence interval for the difference between the proportion of women who drink alcohol and the proportion of men who drink alcohol is (-0.102, -0.014) or (-10.2%, -1.4%).

Step-by-step explanation:

We want to calculate the bounds of a 95% confidence interval of the difference between proportions.

For a 95% CI, the critical value for z is z=1.96.

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The sample 2 (men), of size n2=1000 has a proportion of p2=0.552.

p_2=X_2/n_2=552/1000=0.552

The difference between proportions is (p1-p2)=-0.058.

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The pooled proportion, needed to calculate the standard error, is:

p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{494+552}{1000+1000}=\dfrac{1046}{2000}=0.523

The estimated standard error of the difference between means is computed using the formula:

s_{p1-p2}=\sqrt{\dfrac{p(1-p)}{n_1}+\dfrac{p(1-p)}{n_2}}=\sqrt{\dfrac{0.523*0.477}{1000}+\dfrac{0.523*0.477}{1000}}\\\\\\s_{p1-p2}=\sqrt{0.000249+0.000249}=\sqrt{0.000499}=0.022

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MOE=z \cdot s_{p1-p2}=1.96\cdot 0.022=0.0438

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The 95% confidence interval for the difference between proportions is (-0.102, -0.014).

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