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1 year ago

Which choice shows a function with a domain of {-4, -2, 2, 4)?

Mathematics

2 answers:

Luden [163]1 year ago

7 0

Answer:

C {(-4, 2), (-2, 1), (2, 0), (4, 5)}

Step-by-step explanation:

The domain is the set of x-values for which the function is defined.

<h3>Choices</h3>

A) The relation is only defined for x=2. It is not a function, because x=2 maps to an infinite number of y-values.

B) The domain is an infinite number of x-values. The listed values are included in the domain, but they are not the entire domain.

C) The list of first-values in the ordered pairs is the domain of the function it matches the given domain.

D) The list of first-values in the ordered pairs is not the same as the given domain.

elixir [45]1 year ago

7 0

Answer: C(-4,2), (-2,1), (2,0), (4,5)

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For what values of b the relation R:{(b^2, 5), (5b, 6)} is not a function?

xenn [34]

Answer:

B=5,0.

Step-by-step explanation:

It's not that hard. It's just that it might throw you off a bit with the R and the other things. Functions if you don't remember are where the coordinates don't have the same x and y. So since the y1 and y2 are different then to make it not a function, you have to make x1 and x2. To make it that b would have to be = to 5 and 0.

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3 years ago

Brent is saving for a computer that is $840. He will also need to pay a 6% sales tax. What is the total cost of the computer aft

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Which is not an equation of the line going through (3, -6) and (1, 2)?

777dan777 [17]

Answer:

B, C

Step-by-step explanation:

The equation of a line can be given by y -y₁= m(x -x₁), where m is the slope. This is also known as the point-slope form.

$\boxed{ slope = \frac{y _{1} - y_2 }{x_1 - x_2} }$

Slope of the line

$= \frac{2 - ( - 6)}{1 - 3}$

$= \frac{2 + 6}{ - 2}$

$= \frac{8}{ - 2}$

= -4

Substitute m= -4 into the equation:

y -y₁= -4(x -x₁)

Substitute a pair of coordinates into (x₁, y₁):

Let's start by substituting (1, 2).

y -2= -4(x -1)

This gives us the same equation as D, making D an incorrect option. Note that the question asks for which is not the correct equation.

Let's change the above into the slope-intercept form, where by y is the subject of formula.

Start by expanding the right-hand side:

y -2= -4x +1

+2 on both sides:

y= -4x +3

This equation is not the same as C. C is thus the correct option.

Let's check for options A and B.

The equation in option B is not the correct equation either as they have substituted (2, 1) instead of (1, 2) into (x₁, y₁). Thus, option B is also correct.

y -y₁= -4(x -x₁)

Substitute (3, -6) into (x₁, y₁):

y -(-6)= -4(x -3)

y +6= -4(x -3)

This is the same as option A, making option A incorrect too.

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2 years ago

Match solutions and differential equations. Note: Each equation may have more than one solution. Select all that apply. (a) 7y''

Nonamiya [84]

Answer:

a- $e^x,e^{-x}$