PSAT Math Multiple-Choice Practice Question 726
Question: 726
The variables x and y have a linear relationship; the table below contains several corresponding x-y values for the line. What is the equation of the line made up of x-y values?
| x | y |
| -1 | -6 |
| 1 | 2 |
| 5 | 18 |
| 7 | 26 |
Correct Answer: A
Explanation:
(A) Take the slope of the line using relatively simple points from the table, like (1, 2) and (5, 18):
The only choice with a slope of 4 is (A).
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