I was thinking about using the Pythagorean theorem to solve this, but from this intention I found a quicker way as I did this.
Just pick one of the x or y coordinates of each answer, and find the distance required for that coordinate to reach the x=y line
A. I'll pick y. 2 = 2, so from -1 to 2 is 3 in distance on y-axis.
B. Pick x. 4 - 2 = 2 (Remove A)
C. Pick x. 1 - (-1) = 2 (Remove B and C since they're the same and provides no comparison)
D. Pick y. 2 - 1 = 1
E. Pick x. 0 - (-2) = 2 (Remove E since D is smaller)
=> Answer is D
bmwhype2
Which of the following points is closest to line y=x?
A. (2, -1)
B. (2, 4)
C. (-1, 1)
D. (2, 1)
E. (-2, 0)
M12-20
Experience GMAT Club Test Questions
Rise to the challenge with GMAT Club Tests. Happy practicing!