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viva [34]
3 years ago
7

WILL GIVE BRAINLIEST 27 points

Mathematics
2 answers:
igomit [66]3 years ago
4 0
A direct variation must satisfy both of two conditions:
1. It must pass through the origin (which this graph does)
2. It must be a straight line (which this graph does not satisfy).
Therefore the given graph is NOT a direct variation.

Corollary:
If a function satisfies both of the above conditions, it has an equation of the form 
y=kx
where k is a constant not equal to zero.

This way, we can tell a direct variation even from an equation.
Note: y=4x+2 is NOT a direct variation because the "+2" makes the straight line not pass through the origin.
y=2x^2 is not a direct variation because a function containing any other power of x is no longer a straight line.
tangare [24]3 years ago
3 0
It is not direct variation because it does not follow the equation 
y = slopex
THE points do not make the equation true . 

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Solve the following logarithmic equations.<br> ln(x^6) = 36
Hoochie [10]

Answer:

The solution is x = e⁶

Step-by-step explanation:

Hi there!

First, let´s write the equation

ln(x⁶) = 36

Apply logarithm property: ln(xᵃ) = a ln(x)

6 ln(x) = 36

Divide both sides of the equation by 6

ln(x) = 6

Apply e to both sides

e^(ln(x)) = e⁶

x = e⁶

The solution is x = e⁶

Let´s prove why e^(ln(x)) = x

Let´s consider this function:

y = e^(ln(x))

Apply ln to both sides of the equation

ln(y) = ln(e^(ln(x)))

Apply logarithm property: ln(xᵃ) = a ln(x)

ln(y) = ln(x) · ln(e)         (ln(e) = 1)

ln(y) = ln(x)

Apply logarithm equality rule: if ln(a) = ln(b) then, a = b

y = x

Since y = e^(ln(x)), then x =e^(ln(x))

Have a nice day!

8 0
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