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Answer: DSet 3: Linear Functions (Advanced)
Explanation
PROBLEM
A line passes through (1, 3) and (4, 12). Find the equation.
A line passes through (1, 3) and (4, 12). Find the equation.
A.
y = x + 2
B.
y = 3x + 3
C.
y = 4x - 1
D.✓ Correct
y = 3x
Detailed Explanation
Choice D is the best answer. Slope = 9/3 = 3. y - 3 = 3(x - 1). y = 3x
Why others are wrong:
A: y = x + 2 is incorrect because it does not satisfy the equation.
B: y = 3x + 3 is incorrect because it does not satisfy the equation.
C: y = 4x - 1 is incorrect because it does not satisfy the equation.