Determine whether each equation represents a linear or non linear function, help me plzz y=3x

y=4x-1

y=x²+1

y=0.75x+2

y=0.5x³

y=3x - Linear Function

y=4x-1 - Linear Function

y=x²+1 - Non-Linear Function

y=0.75x+2 - Linear Function

y=0.5x³ - Non-Linear Function

(For a function to be linear, both x & y must equal 1.)

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