1.(40%) True or False. Af (x) 1. If the rate of change, Ar , is a fixed constant for all the values of x, then the function f must be a linear function (a straight line) lim f(ath) - f(a) =b 2. If h , where b is a finite constant, then the function y= f(x) has a tangent at x=a with the slope b. 3. If f is continuous at x=c, then lim