Positive integers are whole numbers that are greater than zero true or false
2 answers:
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Answer:
The answer is below
Step-by-step explanation:
The table shows the ratio between the number of books ordered and their cost: Number of Books Cost (dollars) 7 21 8 24 9 27 Find equivalent ratios when the number of books ordered is 1, 2, and 3. Write them as ordered pairs in the form (x-coordinate, y-coordinate). Starting from the origin, explain how to plot the three equivalent ratios on a coordinate grid.
Answer: Let the number of books be represented as x and the cost (dollars) be represented as y. From the table the ordered pairs in the form (x, y) can be gotten. (7, 21), (8, 24), (9, 27). To get the relationship between the number of books and the cost, we can use the formula of a straight line.
Using point (7, 21) and (8, 24):
When the number of books ordered is 1, 2, 3 the following pairs are:
For x = 1. y = 3x = 3(1) = 3
For x = 2 y=3x = 3(2) = 6
For x = 3 y = 3x = 3(3) = 9
The ordered pairs are (1, 3), (2, 6), (3, 9)
The graph is attached
To plot the ordered pairs, the number of books are plotted on the x coordinate and the cost on the y coordinate
Answer:
Option C is correct answer.
Step-by-step explanation:
We need to draw the graph of piece wise function
So, for drawing the graph, we will find values of f(x) for both the given equations.
First finding f(x) for
The value of x must be less than or equal 1
x f(x)
1 -3
0 -2
-1 -1
-2 0
-3 1
-4 2
The graph will start from closed circle because x ≤ 1
Now, finding values of f(x) for
The value of x must be greater than 1
x f(x)
2 1
3 3
4 5
5 7
The graph will start from open circle because x> 1
Now, plotting these numbers we will get graph of Option C.
Option C is correct answer.