its (-2 , 1) not (-2 1)
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A linear equation/function can have division in the equation, as long as a non-constant variable is not the denominator.Examples:1 y = (1/2)x + 2 Linear2 y/3 = (x - 1)/3 Linear3 y = 1/x + a Non linear
Yes, since y = x - 2 has the degree of 1 [or the highest exponent of the equation], x - 2 is the linear equation.
Without an equality sign it is not an equation.
y = 2x + 1 IS a linear equation!
A linear equation has no higher powers than 1. This is linear.