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Reika [66]
3 years ago
9

Tell whether each equation represents a direct variation. if so, identify the constant of variation.

Mathematics
1 answer:
Ivenika [448]3 years ago
7 0

Answer:

1. Not a direct variation

2. Direct variation (constant= -4)

3. Direct variation  (constant= -1)

Step-by-step explanation:

A direct variation is a function of the type

y = k*x, where k can be any real number

First case

1. y=4x+9  

The term 9 interferes with the expression (it creates an offset for the value)

2. 2y=-8x  

It is a direct variation, y = -4x

3. x+y=0

It is a direct variation, y = -x

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Hello DestinyKiara99 o/
We can solve this equation using the quadratic formula
Check it out...

x² + 6x - 24 = 0       

Δ = 6² - 4.1.(-24)
Δ = 36 + 96
Δ = 132

x = -6 +/- √132    x' = -3 + √33
<span>      --------------   /
              2          \ 
                            x'' = - 3 - </span>√33
The correct answer is the letter D
I hope this help =)
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Step-by-step explanation:

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