How can you determine if a relationship is a direct variation from an equation? a table? a graph?

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm

The diagram shows corresponding lengths in two similar figures. find the area of the smaller figure. a. 14.4 yd2 b. 24 yd2 c. 26.4 yd2 d. 28