Slope of a Line

Question 68427 • LJISD-TX-Geometry-1st 6WKS

What error did she make?

Answer

She simplified the denominator incorrectly. The denominator simplifies to –7.

She labeled the points incorrectly. The point (–7, 4) should be (x1, y1).

She used an incorrect formula. The formula should be the change in y-values with respect to the change in the x-values.

She used an incorrect formula. The formula should be the sum of the x-values with respect to the sum of the y-values.

Lines Cut by a Transversal

Proving Lines Parallel

Lines Cut by a Transversal