Number 2 answer please

What are the domain and range of the function? f(x) = -4 (sqrt)x

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

How do you write y-10=2 (x-8) in standard form