Blackheartderpidn
Answered

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which inequality is equivalent to 7x-2y> 8.

A) y> 7/2x+8
b) y>-2/7x+8/7
c) y <7/2x-4
d) y <-2/7x-4/7

(whats a Inequality? )

Sagot :

Lilithidn
[tex]7x-2y> 8 \ \ -7x \\ \\7x -7x-2y> 8 -7x \\ \\ -2y >8-7x \ \ / : (-2)\\ \\\frac{-2}{-2}\cdot y < \frac{8}{(-2)}-\frac{7}{(-2)}x \\ \\ y < \frac{7}{ 2}x -4 \\ \\ \\  Answer : \ c) \ y < \frac{7}{2}x-4[/tex]


[tex]If \ we \ multiply \ or \ divide \ both \ sides \ of \ an \ inequality \ by \ a \ negative \\ \\number \ we \ have \ to \ switch \ the \ direction \ of \ the \ inequality[/tex]






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