Which set of ordered pairs represents a function? \{(-5, -4), (3, 4), (7, -6), (7, 1)\}{(−5,−4),(3,4),(7,−6),(7,1)} \{(8, -2), (6, 8), (6, 3), (-4, -2)\}{(8,−2),(6,8),(6,3),(−4,−2)} \{(7, 5), (7, -9), (-2, -3), (4, -1)\}{(7,5),(7,−9),(−2,−3),(4,−1)} \{(-8, -7), (0, -7), (-4, 0), (4, -5)\}{(−8,−7),(0,−7),(−4,0),(4,−5)}

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !

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

step-by-step explanation: