Need help on angles of polygons please
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Answer:
Step-by-step explanation:
Tickets for the school play sell for $4 each.
Number of tickers sold = x
Total income from the tickets = y
This means when x = 1, y = 4
SO when we sell 1 ticket (x = 1), we make $4 income (y = 4).
If we sell 2 tickets (x = 2), we will make $8 income (y = 8)
If we sell 3 tickets ( x = 3) , we will make $12 income (y = 12)
If we sell 4 tickets ( x = 4), we will make $16 income ( y = 16) etc.
Also note that when we sell 0 tickets (x = 0), we make no income (y = 0).
So if you create a graph, it should look something like this:
Refer to the attached image. Since one vertex is the origin and the other two lay on the coordinate axes, the triangle is a right triangle. This means that, if we consider AB to the be base, AC is his height, and vice versa.
Anyway, it means that the area is given by
Since AB is a horizontal segment and AC is a vertical segment, their length is given by the absolute difference of the non-constant coordinate: points A and B share the same x coordinate, so we subtract the y coordinates:
The opposite goes for AC: points A and C share the same y coordinate, so we subtract the x coordinates:
So, the area is
