Question

A student finds the slope of the line between (8, 17) and (1, 4). She writes 17-4/1-8 What mistake did she make?

A) She did not keep the order of the points the same in the numerator and the denominator.
B) She used y-values where she should have used x-values.
C) She mixed up the x- and y-values.
D) She should have added the values, not subtracted them.

Answer 1

The answer is actually *C. She mixed up the x and y values.* x2-21/y2-y1 is the equation you need to solve for slope. Therefore the proper equation should be

1-8/17-4