Which ordered pair would form a proportional relationship with the point graphed below? (–40, 20)
(–10, –20)
(15, –30)
(5, –15)

Lindsay used two points, (x, y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?