SOLUTION: 1. Find domain of the function: g (x) = 5 -2x 2. Write an equation in standard form of the line that contains (5,0) and is perpendicular to the line y= -3x + 7 3. Given the

Algebra ->  Functions -> SOLUTION: 1. Find domain of the function: g (x) = 5 -2x 2. Write an equation in standard form of the line that contains (5,0) and is perpendicular to the line y= -3x + 7 3. Given the       Log On


   



Question 146419: 1. Find domain of the function: g (x) = 5 -2x
2. Write an equation in standard form of the line that contains (5,0) and is perpendicular to the line y= -3x + 7

3. Given the following function, h(x) = 2x squared, find h(-1), h(0) and h(4).
I have gone over these so much that I am no longer sure of muyself or the answers! I really appreciate your help. Thank you,
Jody

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1. The domain of the function is the range of x such that the functions makes sense.
There are no limitations on x such that g(x) makes sense so the domain is
(-infinity,infinity)
2. Perpendicular lines have slopes that are negative reciprocals of each other. Your given line slope is -3. The line perpendicular to the given line would then have a slope of (-1/-3) or 1/3.
Use the point slope form of the line using the point (5,0).
y-0=%281%2F3%29%28x-5%29
y=x%2F3-5%2F3
3.
h%28x%29=2x%5E2
h%28-1%29=2%28-1%29%5E2
h%28-1%29=2%281%29
h%28-1%29=2
h%280%29=2%280%29%5E2
h%280%29=2%280%29
h%280%29=0
h%284%29=2%284%29%5E2
h%284%29=2%2816%29
h%284%29=32