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Debora [2.8K]
3 years ago
8

Answer this question please

Mathematics
1 answer:
mixas84 [53]3 years ago
8 0

If a function is a one-to-one relation, then it is invertible. We have

f(x) = y \iff f^{-1}(y)=x

So, given

f(3)=2,\quad f(-4)=8

we can deduce

f^{-1}(2)=3,\quad f^{-1}(8)=-4

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Please explain this to me!
Charra [1.4K]
One meaning of a 'linear' equation is that if you draw the graph
of the equation, the graph will be a straight line.

That's an easy way to test the equation . . . find 3 points on the
graph, and see whether they're all in a straight line.

This equation is        y  =  4 / x .

To find a point on the graph, just pick any number for 'x',
and figure out the value of 'y' that goes with it.
Do that 3 times, and you've got 3 points on the graph.

Here ... I'll do 3 quick points:

Point-A:  x = 1     y =  4 / 1    =  4
Point-B:  x = 2     y =  4 / 2    =  2
Point-C:  x = 4     y =  4 / 4    =  1

Look at this:

Slope of the line from point-A to point-B
                         = (change in 'y') / (change in 'x') =  -2 .

Slope of the line from point-B to point-C
                         = (change in 'y') / (change in 'x') =  -1/2 .

The two pieces of line from A-B and from B-C don't even have
the same slope, so they're not pieces of the same straight line !
So my points A, B, and C are NOT in a straight line.

So the equation is NOT linear.

Try it again with three points of your own.
5 0
3 years ago
An inscribed angle measures 48°; so, the intercepted arc measures 24°. <br> True <br> False
tigry1 [53]

False


The arc is double the inscribed angle.

Arc = 2*48 = 96

4 0
3 years ago
Read 2 more answers
Y = –2x − 2<br> y = –3x − 8
Brut [27]

Answer:

intersect at (10,-6)

Step-by-step explanation:

8 0
3 years ago
in a survey of 400 people ,160 people said they would rather have a cat instead of a dog .what percent of the people said they w
Leya [2.2K]

Hi,

For this question, your answer would 40%.

All you had to was divide 160 by 400.

7 0
4 years ago
John borrowed $80 from his sister, Joan. He agreed to pay her back at a rate of $6 a week. Create a function, P, that gives the
mars1129 [50]

Answer: 6p=80

Step-by-step explanation:

This is the first half of the anwser

7 0
3 years ago
Read 2 more answers
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