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You can:* Add the same expression to both sides of an equation * Subtract the same expression from both sides * Multiply the same expression (must not be zero) to both sides * Divide both sides by the same expression (must not be zero)
If a point on a line is already known, what else is needed in order to create an equation
yes
An equation for a parabola always has some type of irregular variable, usually a squared variable or higher.
x + 2 = 0