Set 2: Linear Functions (Intermediate)

**Choice B is the best answer.** y = mx + b = -x + 5

Explanation

Answer: B

PROBLEM

What is the equation of a line with slope -1 and y-intercept 5?

y = 5x - 1

y = -x + 5

✓ Correct

y = x + 5

y = -x - 5

Detailed Explanation

Choice B is the best answer. y = mx + b = -x + 5

Why others are wrong:

A: y = 5x - 1 is incorrect because it does not satisfy the equation.

C: y = x + 5 is incorrect because it does not satisfy the equation.

D: y = -x - 5 is incorrect because it does not satisfy the equation.