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Q: What type of function is represented by the equation y equals -2lxl?

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There is no "equals" sign therefore "x-9" is NOT an equation.

You can tell if an equation is a function if for any x value that you put into the function, you get only one y value. The equation you asked about is the equation of a line. It is a function.

The function or equation is required to solve this.

No, that is a equation.

A function.

The slope is -4

To check this, you substitute the values for x and y into the equation. At (1,2) x equals 1 and y equals 2 so substituting this in we get: x + 2y = 1 + 2(2) = 1 + 4 = 5 And since it equals 5 like in the original equation the point is represented by it.

5

a function

Yes.

-1/5

q2

yes

-4

The slope is -0.2

-2

5

No, x = 4 is not a function. I would describe x = 4 as the solution to an equation.

The [ 2x + 1 ] represents a function of 'y' .

pV = nRT is the summation of the ideal gas law.

5 and the y intercept is 2

Yes.

11

The equation of invisibility!

Yes, none of the X values repeat, therefore it is a function. X=0 is not a function though.

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