Graphs, Linear Equations, And Inequalities In Two Variables, Functions Worksheet - Mat 100, Armstrong/pierson Page 16
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18Unit 3 – Graphs, Linear Equations, and Inequalities in Two Variables; Functions
3.8 – Functions
domain:
(first component)
range:
(second component)
relation:
function:
Examples:
1.
State the domain and range of each. Is it a function?
a.
b.
(3, 4)
-3
7
(3, 8)
2
6
(-1, 9)
5
-2
“mapping”
“coordinate points”
c.
d. y = 2x + 2
x
y
1
2
-2
4
0
-3
“table”
“graph”
2.
Does y = │x│ + 1 define a function?
2
3.
Find the domain and range of y = x
+ 1.
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