Find the domain and range of the relation and determine whether it is a function.

Mathematics

2 answers:

Over [174]3 years ago

7 0

A is the correct answer. If you write out the order pairs of each point the first number is your domain and the second number is your rang. Yes it is a function because your domain does not repeat.

Sergio [31]3 years ago

3 0

A is the correct answer. A function is defined where every input, x, has only one output. The coordinates are on the graph are (-4,-1), (-1,4), (1,1), and (4,1). As you can see, there is only one output for every input. X is the domain and y is the range.

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Which of the following lines is perpendicular to y= 1/4 x-3 ? Select all that apply. A. 8x-2y=3 B. y=-4x+6 C. y=4x D. y=4x+9 E.

Natali5045456 [20]

it is A. 8x-2y=3

i hope i helped

4 0

3 years ago

What is BE ?<br> Please explain it in full dont just give me an answer

posledela

There are two methods to solve this problem. One of them is the typical method and the other one is the short-cut. I will explain the shortcut

Short-cut:
This method is quick and easy, and works with ALL triangles, which is why I suggest you use this. You make proportions. Since the triangles are similar, we can use CPCTC. Thereafter,
$\frac{AD}{CE}= \frac{DB}{EB}$

Now, you just need to identify the terms, substitute, and solve for the unknown, which would be k.

$\frac{12}{3} = \frac{k+5}{k-7} \\ 12(k-7)=3(k+5) \\ 12k-84=3k+15 \\ 9k=84+15 \\ 9k=99 \\ k=11$ [/tex]

So we found k, but it is asking for BE. Therefore, plug in the value of k, which is 11, into the expression for BE, which is k-7.

BE=K-7
k=11
BE=11-7
BE=4

Your answer is 4.

5 0

3 years ago

Need the answers to these questions please

Katena32 [7]

Answer:

a) $p = 88\,cm$ , b) $p = 24\,cm$ , c) $p \approx 25.424\,m$ , d) $p \approx 39.368\,cm$