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Leya [2.2K]
3 years ago
6

What is the inverse function of d(x)=2x-4

Mathematics
2 answers:
blondinia [14]3 years ago
5 0
Let y=2x-4
now, write this equation in terms of x.

2x = y + 4
Therefore, 
x= y/2 + 2

Now interchange x and y,

Therefore, the inverse is y = x/4 +2 
salantis [7]3 years ago
4 0

let y=2x-4

now, write this equation in terms of x.

2x = y + 4

Therefore,  

x= y/2 + 2

Now interchange x and y,

Therefore, the inverse is y = x/4 +2

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The answer is B. Multiply

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2 years ago
Which equations represent the line that is parallel to 3x – 4y = 7 and passes through the point (-4,-2)? Select two
seropon [69]

Answer:

4y = 3x + 4

3x-4y = -4 is correct

Step-by-step explanation:

This is what we do.

We first express the first equation in the form;

y = mx + c

where m represents the slope of the line

Thus we have;

4y = 3x -7

divide through by 4

y = 3/4x -7/4

Thus the slope here is the coefficient of x which is 3/4

Now, since the lines are parallel, it means that their slopes are equal

So the slope of the other line too is 3/4

We now use the point slope form to find the equation of this other line

Mathematically, that would be;

y-y1 = m(x-x1)

where (x1,y1) = (-4,-2)

Substituting this into the point slope equation, we have;

y-(-2) = 3/4(x-(-4))

y + 2 = 3/4(x + 4)

Cross multiply

4y + 8 = 3x + 12

4y = 3x + 12-8

4y = 3x + 4

5 0
4 years ago
5x−4 = 3x +8<br> i need the steps on how to find x<br> plz, i got a 0 the first time i did it
svetoff [14.1K]

Answer:

5x − 4 = 3x + 8

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5x = 3x + 12

5x <em>- 3x</em> = 3x + 12 <em>- 3x</em>

2x = 12

2x <em>/ 2</em> = 12 <em>/ 2</em>

x = 6

5 0
3 years ago
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posledela

Answer:

Step-by-step explanation:

yes,      (given number) / 5

4 0
3 years ago
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