3 years ago

A scatter plot contains a trend line with a slope of 1/3 does this trend line illustrate a correlation ?

Mathematics

1 answer:

NikAS [45]3 years ago

3 0

The correlation represented is a positive correlation because both variables are increasing.

Papa bless my guy.

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Elena L [17]

Answer:

The inverse of the function is $f^{-1}(x)=\frac{x-5}{3}$ .

Step-by-step explanation:

The function provided is:

$f (x)=3x+5$

Let $f(x)=y$ .

Then the value of x is:

$y=3x+5\\\\3x=y-5\\\\x=\frac{y-5}{3}$

For the inverse of the function, $x\rightarrow y$ .

⇒ $f^{-1}(x)=\frac{x-5}{3}$

Compute the value of $f[f^{-1}(x)]$ as follows:

$f[f^{-1}(x)]=f[\frac{x-5}{3}]$

$=3[\frac{x-5}{3}]+5\\\\=x-5+5\\\\=x$

Hence proved that $f[f^{-1}(x)]=x$ .

Compute the value of $f^{-1}[f(x)]$ as follows:

$f^{-1}[f(x)]=f^{-1}[3x+5]$

$=\frac{(3x+5)-5}{3}\\\\=\frac{3x+5-5}{3}\\\\=x$

Hence proved that $f^{-1}[f(x)]=x$ .

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2 years ago

Write the polynomial in standard form. Then identify the polynomial by the number of terms -5x^2-2x^3-4x

iVinArrow [24]

Hello :
-5x^2-2x^3-4x =-2x^3-5x^2-4x.....( standard form.)
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I = 8 + 4x

XD That's expensive popcorn!

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