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Which equation represents a linear function?

Equation 1: y = 2x2 + 1
Equation 2: y2 = 3x + 1
Equation 3: y = 5x − 1
Equation 4: y = 4x4 − 1

1 Answer

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y=5x-1
A linear equation is one where every variable has its highest power being 1
User Mithun Sreedharan
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