(EASY) Function Notation
f(5) = ?
f(5) = 6
Evaluate each expression if x = 6, y = 8, and z = 3.
xy+z
51
Is this a function?
{(2,3) (5,7) (6,8)}
Yes
−6k + 7k
k
Simplify
(9-2) x 3
21
f(x) = 2x - 3
f(7) = ?
f(7) = 11
Evaluate each expression if x = 6, y = 8, and z = 3.
5z + (y – x)
17
What must be true about a relation in order for it to be considered a function?
n − 10 + 9n − 3
10n − 13
Simplify
9 + 4(3+1)
25
f(x) = -7x + 1
f(-1) = ?
f(-1) = 8
Evaluate each expression if x = 6, y = 8, and z = 3.
2(x + z) – y
10
Is this a function?
{(2,4), (6,7), (2, -5), (7,2)}
No
−5 + 9n + 6
1 + 9n
Simplify
4[30 - (10-2) x 3]
24
f(x) = 5 + 8x
f(0) = ?
f(0) = 5
Evaluate each expression if x = 6, y = 8, and z = 3.
x^2 + y^2 – 10z
70
Is every function a relation?
Yes, functions are just special kinds of relations!
12r + 5 + 3r − 5
15r
Simplify
6(2x - 4y + 3)
12x-24y+18
f(x) = 3 ( 2x - 1 )
f(-5) = ?
f(-5) = -33
Evaluate each expression if x = 6, y = 8, and z = 3.
𝑦 + 𝑥 / 2
7
Is this a function?
{(3,5) (6,5) (1,4) (7,4)}
n + 4 − 9 − 5n
−4n − 5
Simplify
−7(n + 3) − 8(1 + 8n)
−71n − 29