Question

how would i do this?
Let y = f(x) be a function with domain D = [-5, 7] and range R = [-4, 8]. Find the domain D and range R for the function below. Assume f(-5) = 8 and f(7) = -4.
y = -3 f(x)

Answer 1

y(-5) = -3*8 = -24
y(7) = -3*-4 = 12
Domain stays same
Range= [-24,12]

Answer 2

should i just multiply the range values by 3 since its a vertical strethc?

Answer 3

ohh awesome man!!! thanks your the best!