Sammy is classifying quadrilateral EFGH. How can she use coordinate geometry to determine whether EFGH is a parallelogram?

if slope of EH is equal to slope of FG ,then it is quadrilateral

C

Step-by-step explanation:

She (or he) can use the slope formula to find if the opposite sides have equal slope because in a parallelogram the opposites sides are parallel which means they have an equal slope.

this excerpt is taken from the book “we shall not be moved : the women’s factory strike of 1909 “ and is written by joan dash. it is the story of the great strike when almost 30thousand women working in factories in america formed a union to fight unsafe working conditions, long working hours and miserable wages.

question: which best states the author’s purpose for including this information in the text?

answer: to challenge the reader’s ideas about a historical event

where is the option given