Will be marked the brainliest. can someone plz with #4 & 5.

4 Option C

Domain: - 4

Range: negative infinity to positive infinity

Step-by-step explanation:

4. The paired points do not represent a function. This is because the x-ordinates are not changing at all. Instead, they are constant. For example:

(2 , 3)  ( 2 , 5)  

The x-coordinates are 2 here.

The domain of the function is x = -4. This is the input of the function.

The range is from infinity or infinity. This is because the line x = -4 is a straight vertical line.

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