Which of the following relations is a function?

Mathematics

2 answers:

Alexandra [31]3 years ago

7 0

The last one represents a function:)

ale4655 [162]3 years ago

5 0

Answer:

{(5, –4), (–4, 5), (–5, 4), (4, –5)}

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I need help is it A B C Or D

Anarel [89]

Natural selection is the process where organisms are more likely to reproduce. When they reproduce, they pass on traits to the next generation. Over time this process allows organisms to adapt to their environment. Giving what natural selection means, I believe the answer is D. Evolution does NOT always improve organisms.

I hope this helps:)

5 0

3 years ago

Which statement describes if there is an extraneous solution to the equation √x-3 = x-5? A. there are no solutions to the equati

Brrunno [24]

Remember that an extraneous solution of an equation, is the solution that emerges from solving the equation but is not a valid solution.

Lets solve our equation to find out what is the extraneous solution:
 $\sqrt{x-3} =x-5$
$(\sqrt{x-3})^2 =(x-5)^2$
$x-3=x^2-10x+25$
$x^2-11x+28=0$
$(x-4)(x-7)=0$
$x-4=0$ and $x-7=0$
$x=4$ and $x=7$

So, the solutions of our equation are $x=4$ and $x=7$ . Lets replace each solution in our original equation to check if they are valid solutions:
- For $x=7$
$\sqrt{x-3} =x-5$
$\sqrt{7-3} =7-5$
$\sqrt{4} =2$
$2=2$
We can conclude that 7 is a valid solution of the equation.

- For $x=4$
$\sqrt{x-3} =x-5$
$\sqrt{4-3} =4-5$
$\sqrt{1} =1$
$1 \neq 1$
We can conclude that 4 is not a valid solution of the equation; therefore, 4 is a extraneous solution.

We can conclude that the correct answer is: D. the extraneous solution is x = 4

7 0

2 years ago

Identify the equation in slope-intercept form for the line that contains points (3,−10) and (6,5).

BartSMP [9]

Answer:

the answer is 5... 5- (-10) and 6-3 and divide the change by 15 and 3 and you'll get 5

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

What is the product? (3a^2b^4) (-8ab^3)

sladkih [1.3K]