3
Answer: ASet 2: Linear Functions (Advanced)
Explanation
PROBLEM
A line is perpendicular to y = -2x + 5 and passes through (4, 1). Find y-intercept.
A line is perpendicular to y = -2x + 5 and passes through (4, 1). Find y-intercept.
A.✓ Correct
-1
B.
5
C.
3
D.
1
Detailed Explanation
Choice A is the best answer. Slope = 1/2. y - 1 = 0.5(x - 4). y = 0.5x - 1
Why others are wrong:
B: 5 is incorrect because it does not satisfy the equation.
C: 3 is incorrect because it does not satisfy the equation.
D: 1 is incorrect because it does not satisfy the equation.