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AnnZ [28]
3 years ago
15

Does the equation −2x + y = 0 represent a direct variation? If so, identify the constant of variation.

Mathematics
1 answer:
Vikentia [17]3 years ago
3 0
Adding 2x to both sides we get

y = 2x

This is direct variation   where the constant is 2. 
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What is 2/3 - 1/2 <br> &amp; <br> 2/5 - 1/8
notsponge [240]
2/3-> 4/6
1/2-> 3/6
Subtract

1/6

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1/8-> 5/40
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11/40
5 0
2 years ago
A rectangle has a perimeter equal to 24 if we consider its width x how could we talk about its length y in terms of x what are t
riadik2000 [5.3K]

2x + 2y must equal 24. 24 - 2x = 2y and 24 - 2y = 2x. Therefore, 12 - y = x. x could be able to add with y to get 12.

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melisa1 [442]

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Step-by-step explanation:

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mel-nik [20]

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Step-by-step explanation:

6 0
2 years ago
I NEED HELP! If f(x)= 5x^2-3 and g(x)=x^2-4x-8, find (f-g)(x).
yaroslaw [1]

Answer:

(f - g)(x) = 4x² + 4x + 5

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 5x² - 3

g(x) = x² - 4x - 8

(f - g)(x) is f(x) - g(x)

<u>Step 2: Find (f - g)(x)</u>

  1. Substitute:                    (f - g)(x) = 5x² - 3 - (x² - 4x - 8)
  2. Distribute -1:                 (f - g)(x) = 5x² - 3 - x² + 4x + 8
  3. Combine like terms:    (f - g)(x) = 4x² + 4x + 5
5 0
2 years ago
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