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NemiM [27]
4 years ago
9

Plz Helppppp Which relation is a function?

Mathematics
2 answers:
gtnhenbr [62]4 years ago
7 0

Option A. is a function...

here For different values of x in Domain of(x,y) ;There is a unique image y in codomain.

All others have more than one image for a single value x.

Hope it helps...

Regards;

Leukoniv/Olegion.

ryzh [129]4 years ago
3 0
A is the answer {(5,0), (-8,-5), (-8,5), (-5,-8)}
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Let g(x) = 2x and h(x)= x^2 -4. find (g o h)(0)
finlep [7]
The answer is -8

====================================================

Explanation:

There are two ways to get this answer

Method 1 will have us plug x = 0 into h(x) to get
h(x) = x^2 - 4
h(0) = 0^2 - 4
h(0) = 0 - 4
h(0) = -4
Then this output is plugged into g(x) to get
g(x) = 2x
g(-4) = 2*(-4)
g(-4) = -8 which is the answer
This works because (g o h)(0) is the same as g(h(0)). Note how h(0) is replaced with -4
So effectively g(h(0)) = -8 which is the same as (g o h)(0) = -8

-----------------------

The second method involves a bit algebra first
Start with the outer function g(x). Then replace every x with h(x). On the right side, we will replace h(x) with x^2-4 because h(x) = x^2-4

g(x) = 2x
g(x) = 2( x )
g(h(x)) = 2( h(x) ) ... replace every x with h(x)
g(h(x)) = 2( x^2-4 ) ... replace h(x) on the right side with x^2-4
g(h(x)) = 2x^2-8
(g o h)(x) = 2x^2-8

Now plug in x = 0
(g o h)(x) = 2x^2-8
(g o h)(0) = 2(0)^2-8
(g o h)(0) = 2(0)-8
(g o h)(0) = 0-8
(g o h)(0) = -8

Regardless of which method you use, the answer is -8

5 0
3 years ago
3. List the coefficients in the expression below. 14x - 7x + 1-2x​
elena-14-01-66 [18.8K]

Answer:

14, -7, -2

Step-by-step explanation:

<u>The coefficient is the number that multiplies the variable, so list the numbers that fall under that definition:</u>

14x - 7x + 1 - 2x

↑      ↑          ↑

14    -7         -2

<u>The coefficients in the expression are </u><u>14, -7, and -2.</u>

7 0
3 years ago
Is this graph linear or exponential
barxatty [35]
Its a graph linear i believe
3 0
3 years ago
Cynthia is purchasing an electric heater for $181.25, including tax. She gives the sales clerk 2 fifty-dollar bills, 7 ten-dolla
Dafna1 [17]
The answer to the question is C.$0.75
5 0
3 years ago
Read 2 more answers
Which number is 247, 039 ruonded to the nearest thousand?
djverab [1.8K]

247,039 rounded to the nearest thousand becomes

247,000

7 0
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