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2 years ago

a line passes through the point (-3,-5) and has a slope of 5 write an equation in point slope form for this line

Mathematics

1 answer:

Tanzania [10]2 years ago

4 0

Answer:

$y=5x+10$

Step-by-step explanation:

1) Plug numbers into slope formula to find $b$ .

$y=mx+b$

$-5=5(-3)+b$

2) Simplify to find $b$ .

$-5=-15+b$

$10=b$

3) Check work.

$-5=-15+10$

This statement is true.

4) Write equation.

$y=5x+10$

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The 96% confidence interval estimate for the mean daily number of minutes that BYU students spend on their phones in fall 2019 is between 306.65 minutes and 317.35 minutes.

Step-by-step explanation:

Confidence interval normal

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

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Now, find the margin of error M as such

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In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

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The 96% confidence interval estimate for the mean daily number of minutes that BYU students spend on their phones in fall 2019 is between 306.65 minutes and 317.35 minutes.

8 0

2 years ago

If you are givent two points on a line, (5,6) and (-5, -4), what is the slope of the line!

alexira [117]

Answer:

m = -1

Step-by-step explanation:

Formula we'll use: $\frac{y2}{x2} -\frac{y1}{x1} =m$

m = slope.

y2 = -4

x2 = -5

y1 = 6

x1 = 5

Substitute -4, -5, 6, 5 into the formula:

$\frac{-4}{-5} -\frac{6}{5} =$

Subtract both top and bottom:

m = -10/-10

m = -1

3 0

2 years ago