Checking and securing understanding of functions

12 questions

1. 4(x-8) - x + 3 is an example of...
2. When graphing the linear equation y=5x-8 what is the value of the y coordinate when x=3?
3. When graphing the linear equation y=5x-8 what is the value of the y coordinate when x=-1?
4. When we graph the equation y=8 - x^2 what is the maximum value (i.e. the largest value of the y coordinate)?
5. x=7 is not a valid input for which of these equations?
6. Which x values cannot be input into the equation y={x+2\over{(x-3)(x+5)}}?
7. __________ is a mathematical relationship that uniquely maps values of one set to the values of another set.
8. When graphing functions the x values are the domain and the y values are the ___.
9. Which of these values belong to the range, but not the domain, of the function x^2+5?
10. Which of these values belong to the domain, but not the range, of the function 5-x^2?
11. On which of the below would we need to restrict the domain in order to make the function valid?
12. Which of these are many-to-one functions?

License: OGL