Is this a function or not?
2 answers:
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Answer:
Explanation:
Here, we want to get the value of x and y
From the given image, the angle y and 116 lie on a straight line
The sum of the angles on a straight line is 180 degrees
Thus:
The sum of the internal angles of a polygon can be calculated by the formula:
where n is the number of sides the polygon has
In the case of the given question, n is 4
Substituting the value of n, we have it that:
To get the value of x:
Answer:
f(x) = 5x - 30
Yes it is a function
Step-by-step explanation:
Because when you input 0 you get -30 we know it starts at 0 or (0,-30). This gives us b in the equation y = mx + b.
We know that for every 4 cars washed it increases by 20. So 20/4 is 5. This tells us m = 5.
Plug it all in and you get y = 5x - 30 or f(x) = 5x - 30
