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2 years ago

Find the equation of the line Use exact numbers

Mathematics

1 answer:

GaryK [48]2 years ago

8 0

Your Y intercept is 5
Y= mx + 5
Rises -5 / runs 2.5 so
Y= -2x + 5

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please help! functions and relations. f(x)= square root of x-4. find the inverse of f(x) and it’s domain.

likoan [24]

ANSWER:

$\:D.\text{ }f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge-4$

STEP-BY-STEP EXPLANATION:

We have the following equation:

$f(x)=\sqrt{x}-4$

The inverse is the following (we calculate it by replacing f(x) by x and x by f(x)):

$\begin{gathered} x=\sqrt{f^{-1}(x)}-4 \\ \\ \sqrt{f^{-1}(x)}=x+4 \\ \\ f^{-1}(x)=(x+4)^2 \end{gathered}$

The domain would be the range of the original equation, and it would be the range of values that f(x) could take, which was from -4 to positive infinity, that is, f(x) ≥ -4.

Therefore, the domain is x ≥ -4.

So the correct answer is D.

$\:f^{-1}\left(x\right)=\left(x+4\right)^2;x\ge -4$

4 0

8 months ago

Standard form of -2x^2+8x+5

Ksivusya [100]

-2x^2+8x+5 is the standard form

5 0

3 years ago

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AVprozaik [17]

Answer:

Figure three is the odd one out

Step-by-step explanation:

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2 years ago

Why is 560-500 over 500 multiplied by 100?

Lady_Fox [76]

Answer:

Step-by-step explanation:

560-500=60

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2 years ago

Read 2 more answers

What is the value of x?<br> 21<br> 24<br> 32<br> 44

VMariaS [17]

Answer:

x = 21

Step-by-step explanation:

Because GJ is a diameter, the angle K is a right angle (90 degrees).

Thus, 4x + 6 = 90, and 4x = 84. Thus, x = 21

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2 years ago