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2 years ago

Someone please help and choose correct answer

Mathematics

1 answer:

tresset_1 [31]2 years ago

7 0

Answer:

The equation of line that passes through point (2,-1) and has a slope of -3 is $\mathbf{y=-3x+5}$

Option A is correct.

Step-by-step explanation:

We need to write equation of line that passes through point (2,-1) and has a slope of -3

The equation is written in slope-intercept form: $y=mx+b$ where m is slope and b is y-intercept.

We are given slope: m = -3

We need to find y-intercept (b)

Using the point (2,-1) and slope m=-3, we can find y-intercept

$y=mx+b\\-1=-3(2)+b\\-1=-6+b\\b=-1+6\\b=5$

So, we get y-intercept b = 5

Now, the required equation having slope m =-3 and y-intercept b = 5 will be:

$y=mx+b\\y=-3x+5$

So, the equation of line that passes through point (2,-1) and has a slope of -3 is $\mathbf{y=-3x+5}$

Option A is correct.

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balu736 [363]

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Step-by-step explanation:

Given the normal distribution " 10% of employees (rated) exemplary, 20% distinguished, 40% competent, 20% marginal, and 10% unacceptable'', we can see that exemplary employees are top 10% rated employees.

We have the formula for normal distribution:

z=(X-M)÷σ

where z is the minimum z-score for top 10% employee, X is the minimum score for top 10% employee, M is the mean of the score distribution, σ is the standard deviation of the score distribution.

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