126k views
0 votes
Is this right? Domain and range. Also what about the graph. Thank you

Is this right? Domain and range. Also what about the graph. Thank you-example-1

2 Answers

1 vote

The graph is correct. It is a straight line function through the two points (0,0) and (1,4). This indicates

x = 0 people buying tickets lead to y = 0 dollars in sales

x = 1 person buying a ticket leads to y = 4 dollars in sales

---------------

You have the right idea for the domain; however, we include x = 0 and x = 200 as part of the interval. So you should say [0, 200] instead of (0,200)

The square brackets mean "include this endpoint". It is the same as writing
0 \le x \le 200

---------------

The range would be [0, 800] for similar reasons as the domain. Again we include the endpoints. I changed the '4' to a '0' because 0 is the smallest y value possible, which happens when x = 0.

The range written as an inequality would look like this
0 \le y \le 800 (basically saying you can make anywhere between $0 and $800)

User Secustor
by
7.8k points
4 votes
Yes and the graph looks great
User Andrue
by
8.4k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.