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Linear regression assumes the hypothesis function h_θ(x) takes the form

Ah_θ(x) = θ⁰ · 2^x
Bh_θ(x) = θᵀx (with x₀ = 1 to absorb the intercept)
Ch_θ(x) = sin(θᵀx)
Dh_θ(x) = 1 / (1 + exp(−θᵀx))
Answer & Solution
Correct answer: B. h_θ(x) = θᵀx (with x₀ = 1 to absorb the intercept)
h(x) = θᵀx with x₀ = 1 convention. **Option D is the LOGISTIC sigmoid (used for logistic regression), not linear regression.**
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