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3 years ago

NEED HELP ASAP PLEASE WITH #2!

Mathematics

1 answer:

AleksandrR [38]3 years ago

4 0

Answer: The answer is the first bubble

Step-by-step explanation:

1. When you identify the pairs you get: { ( -5,-4), (-1,5), ( -5,3) , (7,8) }

2. When figuring out whether or not it is a function, you have to see if there are any same y values. If there is no y values that are the same, then the relation is a function.

3. This relation is a function.

* Also, if you have a relation that has the two or more of the same x values, the relation is still a function no matter what.

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The mean monthly utility bill for a sample of households in a city is $70, with a standard deviation of $8. Between what two val

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Empirical rule dictates that, in a Bell-shaped distribution, 95% of data lies within 2 standard deviation on either side of the mean.

Therefore,
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4 years ago

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4 years ago

Y = 4x - 5 and (3,4) (7, 3) A. parallel B. perpendicular D. neither

s344n2d4d5 [400]

Answer:

The lines are perpendicular. Option B.

Explanation:

Equation of the Line

One of the characteristics of the line is its slope. It can be determined in two ways:

* From the equation y=mx+b, the m is the slope. The given equation is y=4x-5. Thus, the slope of this line is m=4.

* Suppose we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

$\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

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$\displaystyle m=\frac{3-4}{7-3}=-\frac{1}{4}$

A. For two lines to be parallel, their slopes must be equal. Since m1=4 and m2=-1/4, the lines are not parallel. Incorrect

B. For two lines to be perpendicular, their slopes must meet the condition:

$m1*m2=-1$

4*(-1/4)=-1

Both lines are perpendicular. Correct choice

D. Since choice B. is correct, this cannot be true. Incorrect

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3 years ago

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Answer:

C.) y/2

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