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3 years ago

What is the y intercept of the line y = 2x+1?

Mathematics

2 answers:

Tresset [83]3 years ago

6 0

Answer:

Step-by-step explanation:

the equation for a slope-intercept line is y=mx+b. In this equation, b represents the y intercept. In the equation you posted, 1 is in the place of b, so one is the y intercept.

hope this helps

Solnce55 [7]3 years ago

6 0

Answer:

the y intercept is 1

Step-by-step explanation:

to find the y intercept you must always replace x with 0 and solve

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2 years ago

Burka [1]

Answer:

Step-by-step explanation:

$F \alpha \frac{1}{d^{2} }$

$F = \frac{K}{d^{2} }$

When F = 18; d = 2

$18 = \frac{K}{2^{2} }$

$18 = \frac{K}{4}$

Cross multiply;

18 x 4 = K

72 = K

There the equation connecting F and $d^{2}$ is

$F = \frac{72}{d}$

Now, Find F when d = 6

All you do is to substitute d = 6 in to $F = \frac{72}{d}$

$F = \frac{72}{6}$

Therefore;

F = 12

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2 years ago

A sample of 12 measurements has a mean of 8.5 and a sample of 20 measurements has a mean of 7.5. Find the mean of all 32 measure

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3 years ago

The safety inspector in a large city wants to estimate the proportion of buildings in the city that are in violation of fire cod

Drupady [299]

Answer:

Proportion of buildings in the city that have fire code violations: 10%

Uncertainty 0.3 = 30%

Step-by-step explanation:

This situation complies with a binomial model where p is the probability of finding a building having fire code violations and q=1-p

Since in random sample of 40 buildings chosen for inspection 4 of them are found to have fire code violations, the proportion is 4/40 = 0.1 or 10% and p=0.1 as well.

In a binomial model the standard deviation s is:

$\large s=\sqrt{npq}$

where n is the sample size. So

$\large s=\sqrt{40*0.1*0.9}=1.8974$

and the uncertainty is the standard error SE

$\large SE=\frac{s}{\sqrt{n}}=\frac{1.8974}{\sqrt{40}}=0.3=30\%$

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3 years ago