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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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<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B2%7D" id="TexFormula1" title="\frac{x}{2}" alt="\frac{x}{2}" align="absmiddle
PtichkaEL [24]

All you need to do to solve this is multiply 2 to both sides. This will cancel out 2 from the denominator and isolate x...

2(\frac{x}{2}) = -7 * 2

x = -14

Hope this helped!

~Just a girl in love with Shawn Mendes

4 0
2 years ago
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Semenov [28]

Answer:

5/12

Step-by-step explanation:

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3 years ago
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2 years ago
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Paha777 [63]
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4 0
3 years ago
-x - 1 = 221 + 2x <br> plzzzzzzzzz help
Otrada [13]
Simplifying&#10;-1x + -1 = 221 + 2x&#10;&#10;Reorder the terms:&#10;-1 + -1x = 221 + 2x&#10;&#10;Solving&#10;-1 + -1x = 221 + 2x&#10;&#10;Solving for variable 'x'.&#10;&#10;Move all terms containing x to the left, all other terms to the right.&#10;&#10;Add '-2x' to each side of the equation.&#10;-1 + -1x + -2x = 221 + 2x + -2x&#10;&#10;Combine like terms: -1x + -2x = -3x&#10;-1 + -3x = 221 + 2x + -2x
Combine like terms: 2x + -2x = 0&#10;-1 + -3x = 221 + 0&#10;-1 + -3x = 221&#10;&#10;Add '1' to each side of the equation.&#10;-1 + 1 + -3x = 221 + 1&#10;&#10;Combine like terms: -1 + 1 = 0&#10;0 + -3x = 221 + 1&#10;-3x = 221 + 1&#10;&#10;Combine like terms: 221 + 1 = 222&#10;-3x = 222&#10;&#10;Divide each side by '-3'.&#10;x = -74&#10;&#10;Simplifying&#10;x = -74
5 0
3 years ago
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