Answer:
Domain
Step-by-step explanation:
The <u>domain</u> tells you all of the possible x-values in a set of data.
The example uses ordered pairs written as (x, y), and takes out all of the x-values. It wrote the domain in set notation (which is when the { } curly-styled parentheses are used).
Do not confuse domain with range. Range means all of the y-values in a relation.
In the provided example, the range would be {3, 4, 5, 7}.
Answer:
im pretty sure its 2
Step-by-step explanation:
Answer:
C is the most reasonable answer because to add the system of equations together, you must make sure that one of the terms (whether it be the x or y value) can cancel out.
Step-by-step explanation:
Answer:
See below
Step-by-step explanation:
(1) 2x + 3y = 15
(2) x - 3y = 3
First step:
Add Equations (1) and (2).
Reason:
The y terms have the same coefficient (3). If I add +3 and -3, the two terms will cancel each other (be eliminated).
How it helps:
If I eliminate the y terms, I have only one variable, the x variable, to deal with.
(1) 2x + 3y = 15
(2) x - 3y = 3
(3) 3x = 18
I can then easily solve Equation (3) for the value of x.
