Question

slope of demand curve

Answer 1

More plainly, in the equation P = a − bQ, "a" is the intercept where price is zero (where the demand curve intercepts the Y-axis), "b" is the slope of the demand curve, "Q" is quantity and "P" is price.

Answer 2

The demand curve is often graphed as a straight line of the form Q = a-bP where a and b are parameters.
'a' is the intercept where price is zero ,the constant "b" is the slope of demand curve and shows how the price of the good affects the quantity demanded and 'Q' is quantity and 'p' is price.