When a function can be written as an equation, the symbol f(x) replaces y and is read as "the value of f at x" or simply "f of x".
This does NOT mean f times x.
When y is replaced with f(x) it is called function notation.
REMEMBER: f(-3) means -3 is your input and you substitute it for x.
f(x) = -3 means that your output is equal to -3 and you set it equal to your function.
If f(x) = 2x - 3, find f(-2)
If f(x) = 2x - 3, find f(7)
If f(x) = 2x - 3, find f(-4)
If k(x) = -7x + 1, find k(0)
If k(x) = -7x + 1, find k(-1)
If k(x) = -7x + 1, find k(5)
If h(x) = x2 - 3x + 5, find h(-3)
If h(x) = x2 - 3x + 5, find h(5)
If p(x) = x2 + 5x - 3, find p(-2)
If p(x) = x2 + 5x - 3, find p(1)
If f(x) = 5x - 3, fill out the following table of values:
What type of function is this?
If f(x) = 2x + 5, fill out the following table of values: (You can use your calculator)
What type of function is this?
f(-3) =
f(20) =
f(8) =
If f(x) = 9, what is x?
If f(x) = 4, what is x?
If f(x) = 0, what is x?
Let f(x) = 2x - 3. If f(x) = 15, what is x?
Let g(x) = 3x + 2. If g(x) = 11, what is x?
Let w(x) = 3x - 7. If w(x) = 14, what is x?
Let h(x) = -2x - 5. If h(x) = -25, what is x?