Which of the following inequalities is graphed below?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).