# Functions that Describe Situations

### Topic Page

Functions that Describe Situations### Questions

- What is an example of a function that describes a situation?
- How do you write a function rule that describes a cost of a CD that is $2 each?
- Why do you write functions to describe real life situations?
- How do you write the function rule for an auto place that charges $20 flat rate plus $27 per hour?
- What is the function rule for the following relationship: #f(2)=8#, #f(4)=12#, #f(6)=16#?
- What is the function rule where the y values are 1, 8, 64 corresponding to the x values that are 1, 2, 3?
- How do you write a function notation for the situation: 10 more than twice the number x?
- How do you write a function rule for the number of cuts you need to make to cut a rope into x pieces?
- How much does Solomon make for a 2-hr job, if he charges $50 flat rate plus $25 per hour to fix a leaky faucet?
- How do you express the cost of making x small boxes, y medium boxes, and z large boxes, it costs $2.50 to make a small box, $4.00 for a medium box, and $4.50 for a large box and the fixed costs are $8000?
- How do you write a function rule for #x = 2, 4, 6# and #y = 1, 0, -1#?
- How do you find the function rule?
- Is #x^2+5# a function?
- Is the product of two numbers multiplication or addition?
- For #y = x^2 - 2#, if the x-values are -3, -2, 0, 1, 2 what are the y values?
- What is the function rule for these ordered pairs (-2, -18) (0, -4) (1, 3) (3, 17)?
- What are the ordered pairs of: -x + 3y = 9?
- Does the ordered pairs (1,2), (2,5), (3,10), (4,17), and (5,26) represent a function.?
- How do i find a function such as #f(a)f(b)f(c) = f(sqrt(a^2+b^2+c^2))f^2(0)# ?
- How do you know if Points P(5,7) and Q(-1,1) lie on the graph of y=x+2?
- How do you graph the equation by plotting points #2x – 2y = 6#?
- How do you graph the equation by plotting points #3x - 2y = 6#?
- How do you graph the equation by plotting points #-x + 3y = -9#?
- How do you graph the equation by plotting points #4x - 3y = 6#?
- How do you graph the equation by plotting points #3x + 5y = 12#?
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- How do you solve the system #(x+y)^2+3(x-y) = 30# and #xy+3(x-y) = 11# ?
- Solve #{(x^2 + 1 = 81 (y^2 + y)),( x^2 + x = 9 (y^3 + 1)):}# ?
- Question #58346
- How do you solve the system of equations: #(x+y)^(1/2)+3(x-y)=30# and #xy+3(x-y) = 11# ?
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- How do you determine (5,2) is a solution to x+y=8?
- For what value of c is the relation a function: (2,8),(12,3), (c,4), (-1,8), (0,3)?
- The health club charges joining fee of 125 plus $57 per month, how do you write a function?
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