SOLUTION: 9. y = -9x + 11 A. Domain = {all real numbers}, Range = {all real numbers <= 11} B. Domain = {all real numbers}, Range = {all real numbers > 11} C. Domain = {all real numbers}

Algebra ->  Functions -> SOLUTION: 9. y = -9x + 11 A. Domain = {all real numbers}, Range = {all real numbers <= 11} B. Domain = {all real numbers}, Range = {all real numbers > 11} C. Domain = {all real numbers}      Log On


   

Question 1197779: 9. y = -9x + 11
A. Domain = {all real numbers}, Range = {all real numbers <= 11}
B. Domain = {all real numbers}, Range = {all real numbers > 11}
C. Domain = {all real numbers}, Range = {all real numbers > 0}
D. Domain = {all real numbers}, Range = {all real numbers}
E. Domain = {all real numbers <= 9}, Range = {all real numbers}
F. Domain = {all real numbers > 9}, Range = {all real numbers}

10. y = 40 - 8x2
A. Domain = {all real numbers <= 8}, Range = {all real numbers <= 40}
B. Domain = {all real numbers}, Range = {all real numbers > 40}
C. Domain = {all real numbers}, Range = {all real numbers}
D. Domain = {all real numbers}, Range = {all real numbers <= 40}
E. Domain = {all real numbers}, Range = {all real numbers <= 8}
F. Domain = {all real numbers > 8}, Range = {all real numbers}
Answer by math_tutor2020(3817) About Me  (Show Source):
You can put this solution on YOUR website!

Hint:
Here is the graph of y = -9x+11
graph%28400%2C400%2C-5%2C5%2C-5%2C16%2C0%2C-9x%2B11%29
Notice it stretches forever to the left and right, also it stretches forever upward and downward.

And here is the graph of y = 40-8x^2
graph%28400%2C400%2C-10%2C10%2C-50%2C50%2C0%2C40-8x%5E2%29
The vertex point (highest point in this case) is located at (0,40)
The parabola stretches forever to the left and right.

Another hint:
Domain = set of all allowed x inputs
Range = set of all possible y outputs