What is a domain in algebra

1 answer:

4 0

In algebra, the "domain" of a relation is the set of unique and acceptable INPUT values to the function. In typing out a domain, you'd eliminate any duplicates:

{1, 2, 2, 3, 4, 5, 7} (wrong, because 2 shows up twice)
and you'd ensure that the function/relation is defined at each INPUT value.

Note that the function y = sqrt(x) has domain [0, infinity), so negative numbers are not part of the domain; they are not acceptable input values.

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What is slope of the line parallel to the line containing points (2,5) and (6,-11)

Ksivusya [100]

The parallel lines have the same slope.

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (2, 5) and (6, -11).

Substitute:

$m=\dfrac{-11-5}{6-2}=\dfrac{-16}{4}=-4$

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4 years ago

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Step-by-step explanation:

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The length of the rectangle is 8cm longer than the width.

masya89 [10]

The length of the rectangle is 8cm longer than the width.
l=w+8
If the length of the original rectangle is increased by 6cm and the width is increased by 3cm the perimeter is 76cm.
p=76=((l+6)+(w+3))*2=(l+6+w+3)*2=(l+w+9)*2

to solve this substitute l=w+8 into the p= equation:
p=76=((w+8)+w+9)*2=
76=(2w+17)*2
76=4w+34
42=4w
10.5=w

l=w+8=10.5+8=18.5

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4 years ago

How would u do this question?

Anton [14]

I’m not sure but try connects it helps me a lot with my math homework

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3 years ago

What does a vector do to a translation

Alona [7]

Answer:

A translation vector is a type of transformation that moves a figure in the coordinate plane from one location to another. In other words, a translation vector can be thought of as a slide with no rotating. The slide won’t change the shape or size of the figure, and with no rotation, the orientation won’t change either.

Step-by-step explanation:

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