The equation y = x + a is graphed in the xy-plane, where a is a positive constant. A second equation, y = x -- a, is graphed in the same xy-plane. How do the slope and y-intercept of the
graph of the first equation compare with the slope and y-intercept of the graph of the second
equation?

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125