Question: What is the equation of the line that is perpendicular to y = 2x + 1 and passes through the point (1, 2)?

Options:

1. y = -1/2x + 5/2
2. y = 1/2x + 3/2
3. y = -2x + 4
4. y = 2x - 1

Correct Answer: y = -1/2x + 5/2

Solution:

The slope of the perpendicular line is -1/2. Using point-slope form: y - 2 = -1/2(x - 1) => y = -1/2x + 5/2.