Given the diagram below, which of the following ordered pairs represents the vertex, a?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

X-10/4 when x = –18 a 7 b –2 c –7 d 2