Willa says the slope of the graph is -1/3. what error did she make when finding the slope? the slope is positive instead of negative. she counted the squares instead of using the scale. she used the points that are further apart instead of the two consecutive points. she used rise/run when finding slope.

Dimitri used a coupon that saved him 80 percent, or $6.87. he paid $34.35 for the items.dimitri used a coupon that saved him 80 percent, or $27.48. he paid $34.35 for the items.dimitri used a coupon that saved him 80 percent, or $6.87. the price of the items before the discount was $34.35.dimitri used a coupon that saved him 80 percent, or $27.48. the price of the items before the discount was $34.35.