If g(x)=k×f(x) what is the value of k?

k = g(x)/f(x)

Step-by-step explanation:

Unless there is more to the question, the answer is g(x) / f(x) = k

You just need to divide both sides by f(x)

Here's an example

f(x) = 20x + 40

g(x) = 80x + 160

k = g(x)/f(x) = (80x + 160) / (20x + 40) = 4*(20x + 40)/(20x + 40)

k = 4

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50