Does this graph represent a function?
1 answer:
The graph doesn't represent a function
f(x) 3 because D. Yes, because each x-value has exactly one corresponding y-value.
<h3>What is a function?</h3>It should be noted that a function simply assigns the value of each element of a particular set to the other specific element of another set.
It can be seen that in the given graph, each specific value of x from the x-axis represents a value on the y-axis. Therefore, it can be concluded that the given graph is a function because each x-value has exactly one corresponding y-value.
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Answer:
The cost of 1 doll = $ 7.5
and The Cost of 1 toy train = $ 5
Step-by-step explanation:
Let the price of 1 doll = $ x
The price of 1 toy train = $ y
Now, according to the question:
6 x + 2 y = $ 55
and 4 x + 7 y = $ 65
Solving the given system of equation,
From (1), we get
or, solving for y , we get
110y - 4y + 21 y = 195
or, 17 y = 85
⇒ y= 85/17 = 5
This implies : 6 x + 2 (5) =55
or, 6x = 55 - 10 = 45
or, x = 45/ 6 = 15/2
Hence, the cost of 1 doll = x = $ 7.5
and the Cost of 1 toy train = y = $ 5