A student finds the slope of the line between the point 14, 1 and the point 18, 17. She writes the quantity 1 minus 17 end of quantity divided by the quantity 18 minus 14 end of quantity. What mistake did she make?

A. She mixed up the x- and y-values.

B. She did not keep the order of the points the same in the numerator and the denominator.

C. She used y-values where she should have used x-values.

D. She should have added the values, not subtracted them.

Question

A student finds the slope of the line between the point 14, 1 and the point 18, 17. She writes the quantity 1 minus 17 end of quantity divided by the quantity 18 minus 14 end of quantity. What mistake did she make?

A. She mixed up the x- and y-values.

B. She did not keep the order of the points the same in the numerator and the denominator.

C. She used y-values where she should have used x-values.

D. She should have added the values, not subtracted them.