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Q: Is x plus y2 equals 25 a linear equation?

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It is a linear equation in the variable a.

It is a linear equation in x. It has a solution, which is x = -5

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5r = 25 is a linear equation in one variable, r. The solution is r = 5.

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You were going along pretty good until you hit the words "to the second power". Right there, you no longer have a 'linear' equation. The question looks like you're trying to say one of the following two equations: Either x + y2 = 25 or (x + y)2 = 25. Neither is a linear equation. Each is the equation of a parabola.

25

9

Technically there are no variables in this equation, as 47 minus 25 is equal to x (22)

r = 25

X=65

x=25

It is an equation and the value of m is -6

2x + 5 = 25 2x = 20x = 10

-17/23 and the intercept is 25/23

It is a linear equation in the variable x. You can solve for x using algebra: -5x + 3 = -22 -5x = -25 -x = -5 x = 5

When x = -5

Using the quadratic equation formula: x = -5-/+ the square root of 7

It is the Cartesian equation of an ellipse.

2n + 5 = 25 < ---------------- Write the Equation 2n = 20

It is: 25-4(8*6) = -167

(8,-8)

(-5, 3)

Ab = 25 CD