Are the lines parallel? y = x + 4 and y = x - 2 * 1. yes, they have the same slope and a different y-intercept

2. no, they are not parallel

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.