What is 9 x 100 + 8 x 10 + 7 x 1000

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?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?