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2 years ago

Find the y-intercept of the line by substituting 0 in for x and solving for y. y = 4x -12

Mathematics

1 answer:

RoseWind [281]2 years ago

5 0

Answer:

y-intercept = -12

Step-by-step explanation:

The y-intercept is the "y" value when x = 0. You can find the y-intercept by plugging 0 into the equation and simplifying.

y = 4x - 12 <----- Original equation

y = 4(0) - 12 <----- Plug 0 in "x"

y = 0 - 12 <----- Multiply 4 and 0

y = -12 <----- Subtract 12 from 0

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DIA [1.3K]

Answer:

y=-4/3x-8/3

Step-by-step explanation:

Use the slope formula y2-y1/x2-x1

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3 years ago

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3 years ago

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A 99% confidence interval for the difference between two proportions was estimated at 0.11, 0.39. Based on this, we can conclude

sladkih [1.3K]

Answer:

$\hat p_1 -\hat p_2 \pm z_{\alpha/2} SE$

And for this case the confidence interval is given by:

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Step-by-step explanation:

Let p1 and p2 the population proportions of interest and let $\hat p_1$ and $\hat p_2$ the estimators for the proportions we know that the confidence interval for the difference of proportions is given by this formula:

$\hat p_1 -\hat p_2 \pm z_{\alpha/2} SE$

And for this case the confidence interval is given by:

$0.11 \leq p_1 -p_2 \leq 0.39$

Since the confidence interval not contains the value 0 we can conclude that we have significant difference between the two population proportion of interest 1% of significance given. So then we can't conclude that the two proportions are equal

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3 years ago