Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Math practice test
Practice Question
What is the slope of a line that is perpendicular to the line y = -9x + 7?
Answer Choices
- A: 1\9
- B: -0.111111111
- C: 9
- D: -9
Correct Answer: A
Rationale: Slope of y = -9x + 7 is -9. Perpendicular slope = -1/(-9) = 1/9. Thus, the correct answer is 1/9.