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3 years ago

Can someone help me with this? Please

Mathematics

2 answers:

diamong [38]3 years ago

8 0

Answer:

I really want to help you, but it looks like you're missing part of your question. If an image will not appear, and you really need help, the most logical solution is to type it out.

While that may not be very convenient to you, it's extremely hard to answer a question when there is no question attached (:.

Next time, please fully write your question and check over it to make sure you haven't deleted it on accident.

Hope this helps!

kkurt [141]3 years ago

6 0

Answer:

What? help you with what

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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What is the equation when y=5x+4 is reflected over the x-axis, y-axis & y=x?

tigry1 [53]

Answer:

A) $y=-5x-4$

B) $y=-5x+4$

C) $y=\frac{x-4}{5}$

Step-by-step explanation:

So we have the equation:

$y=5x+4$

Let's write this in function notation. Thus:

$y=f(x)=5x+4$

To flip a function over the x-axis, multiply the function by -1. Thus:

$f(x)=5x+4\\-(f(x))=-(5x+4)$

Simplify:

$-f(x)=-5x-4$

B) To flip a function over the y-axis, change the variable x to -x. Thus:

$f(x)=5x+4\\f(-x)=5(-x)+4$

Simplify:

$f(-x)=-5x+4$

C) A reflection over the line y=x is synonymous with finding the inverse of the function.

To find the inverse, switch x and f(x) and solve for f(x):

$f(x)=5x+4$

Switch:

$x=5f^{-1}(x)+4$

Subtract 4 from both sides:

$x-4=5f^{-1}(x)$

Divide both sides by 5:

$f^{-1}(x)=\frac{x-4}{5}$

And we're done :)

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