ISEE Quantitative Comparisons Question 140: Answer and Explanation
Home > ISEE Test > ISEE Quantitative Comparisons Practice Tests
Test Information
- Use your browser's back button to return to your test results.
- Do more ISEE Quantitative Comparisons Practice Tests.
Question: 140
1.
Line p is the graph of y = 2x – 2.
Line q is perpendicular to line p.
- A. The quantity in Column A is greater.
- B. The quantity in Column B is greater.
- C. The two quantities are equal.
- D. The relationship cannot be determined from the information given.
Correct Answer: B
Explanation:
The answer is B
The slope of a line perpendicular to another line is the negative reciprocal of the other line's slope. Slope is represented by m in the equation y = mx + b. In this case, the slope of line p is 2. Thus, the slope of line q is -.
Reading left to right, a positive slope proceeds up, and a negative slope proceeds down. Thus, the slope of line q is negative. Column B (positive) is greater.