Does this table represent a function? Why or why not? х
y
2
1
3
4
4
4
5
2
5
5
O A. No, because two of the y values are the same,
O B. Yes, because every x-value corresponds to exactly one y-value.
O C. Yes, because there is the same number of x-values as y-values.
OD. No, because one x-value corresponds to two different y-values.

l.ln.lln.k.nkl

step-by-step explanation:

5/12, or 5: 12

step-by-step explanation:

0.02040816326

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15