5
Answer: ASet 5: Linear Functions (Intermediate)
Explanation
PROBLEM
What is the equation of a line through (1, 4) and (3, 10)?
What is the equation of a line through (1, 4) and (3, 10)?
A.✓ Correct
y = 3x + 1
B.
y = 3x + 4
C.
y = 2x + 1
D.
y = 3x - 1
Detailed Explanation
Choice A is the best answer. Slope = 3. y - 4 = 3(x-1). y = 3x + 1
Why others are wrong:
B: y = 3x + 4 is incorrect because it does not satisfy the equation.
C: y = 2x + 1 is incorrect because it does not satisfy the equation.
D: y = 3x - 1 is incorrect because it does not satisfy the equation.