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Andrew [12]
3 years ago
14

Find the inverse of the function y= -3/ x+ 4

Mathematics
2 answers:
Zinaida [17]3 years ago
8 0
The procedure for an inverse is to interchange x and y and solve for y

x = -3/y + 4 I'm solving this as it is written and not x = -3/(y + 4) Subtract 4
x - 4 = -3/y
y(x - 4) = - 3
y = -3/(x - 4)

If you did mean y = - 3/(x + 4) then the inverse would be
x = - 3 / (y + 4)
x*(y + 4) = -3
y + 4 = -3/x
y = -3/x + 4
Amazing! The inverse is the same as the original question.


Tomtit [17]3 years ago
7 0
Y=4-3/x
y-4=-3/x
(y-4)x=-3
x(y-4)=-3
x=-3/y-4

there's you answer
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Suppose xy > 0. Describe the points whose coordinates are solutions to the inequality.
Elan Coil [88]

The solutions fo the inequality are all the points (x, y) that meet these 3 conditions.

  • x ≠ 0
  • y ≠ 0
  • Sign(x) =sign(y)

<h3>Which points are solutions of the inequality?</h3>

We want to find points of the form (x, y) that are solutions of the inequality:

x*y > 0

Clearly x and y must be different than zero.

So, for example if x = -1, y can be any negative number, for example y= -3

x*y > 0

(-1)*(-3) > 0

3 > 0

This is true.

Now if x  = 1, y must be positive. LEt's take y = 103, then:

x*y > 0

1*103 > 0

103 > 0

Then we have 3 conditions:

  • x ≠ 0
  • y ≠ 0
  • Sign(x) =sign(y)

The solutions fo the inequality are all the points (x, y) that meet these 3 conditions.

If you want to learn more about inequalities:

brainly.com/question/25275758

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4 0
2 years ago
A CD usually sells for $17.00. If the CD is 30% off, and sales tax is 8%, what is the total price of the CD, including tax?
Mademuasel [1]

Answer:

First find what the sale price of the CD is. 30% off means the CD is selling for 70% of the original cost ( 100%-30% = 70%)


Multiply the original cost by 70%:

17.00 x 0.70 = $11.90 ( sale price)

Now you need to multiply the sale price by the tax percentage to find the amount of tax:

11.90 x 0.08 = 0.95 ( tax)


Now add the sale price and the tax for the total cost:

11.90 + 0.95 = $12.85


6 0
2 years ago
Help pleaseeeeeeeee :)
nexus9112 [7]

Answer:

x=-3

Step-by-step explanation:

x+9 = 3.2=6

x= 6-9=-3

5 0
3 years ago
Read 2 more answers
M∠a=(48−x)°m∠b=(9x−38)°m∠c=90°
Pachacha [2.7K]

<u>The question does not specify the condition that must satisfy the given angles. We assume they are the internal angles of a triangle.</u>

Answer:

<em>x = 10</em>

Step-by-step explanation:

<u>Internal Angles of a Triangle</u>

The measure of the angles of a triangle are given as 48-x, 9x-38, and 90. Since the sum of the internal angles of a triangle is 180°:

48 - x + 9x - 38 + 90 = 180

Simplifying:

100 + 8x = 180

Subtracting 100:

8x = 180 - 100 = 80

x = 80/8

x = 10

7 0
3 years ago
4. In a scale drawing, the length of a
skad [1K]

Answer:

1ft=.33in

Step-by-step explanation:

For every 1ft in the room its .33 on paper.

.33333333333333333333333333333x18=6

5 0
3 years ago
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