Use the equation x^2-xy+y^2-1. a. find four points on the graph of the equation
b. Show that if (a, b) is on the graph, then (-a,-b) is also on the graph
c. Sketch the graph

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell

Joey is asked to name a quadrilateral that is also a rhombus and has 2 pairs of parallel sides. should be his answer