Let f be the linear function fx 2x 7 a The rate of change

Let f be the linear function f(x) = -2x + 7.

(a) The rate of change of f is

Solution

f(x) = -2x+ 7

comparing linear function witrh standard equation

f(x) = mx+ b

where m is the rate of change

so m would be -2

hence rate of change is -2