OK, the relation. (2,9), (2,8), (-3,7) (-3,6)
Since 2 maps to two values, as does -3, this relation is not a function.
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By the way these points, in this slightly different order,
(2,9), (2,8), (-3,7) (-3,6)
are the vertices of a parallelogram.
Download photomath it really helps and solves the question for you and shows you the steps
There is a really easy way to find this out I can't really help you so if you just look it up on google you should get your awnser
For this case we have the following equation:
s = root (S.A / 6)
Substituting values we have:
For S.A = 180:
s = root (180/6)
s = root (30)
For S.A = 120:
s = root (120/6)
s = root (20)
s = root (4 * 5)
s = 2 * root (5)
Subtracting both values we have:
root (30) - 2 * root (5)
Answer:
root (30) - 2 * root (5)
option 2
Things we know:
Six total pots = # of 10" + # of 8"
$78 total = cost of 10" + cost of 8"
So:
6 = x +y
and
78 = x*(cost of x) + y * (cost of y)
78 = x*12 + y*15
We need:
x+y=6 AND 12x+15y=78
So our answer can only be B.
