6. its not b i need this answer QUICK!!

Which relation is a function?

{(5, 0,) (–8, –5)}

{(5, 0), (–8, –5), (–8, 5), (–5, –8)}

{(5, 0), (0, 5), (–5, –5)}

{(5, 0), (0, –8), (5, –5)}

The answer is A. {(5, 0), (-8, -5)}

Step-by-step explanation:

It's not B. because Since  

x

=

−

8

produces  

y

=

−

5

and  

y

=

5

, the relation  

(

5

,

0

)

,

(

−

8

,

−

5

)

,

(

−

8

,

5

)

,

(

−

5

,

−

8

)

is not a function.

The relation is not a function.

It's not C. because Since there is one value of  

y

for every value of  

x

in  

(

5

,

0

)

,

(

0

,

5

)

,

(

−

5

,

−

5

)

It's not D. because Since  

x

=

5

produces  

y

=

0

and  

y

=

−

5

, the relation  

(

5

,

0

)

,

(

0

,

−

8

)

,

(

5

,

−

5

)

is not a function.

The relation is not a function.

it would be:

c.parallelogram.

d, x=8

step-by-step explanation:

simplifying

4x + -5 = 2x + 11

reorder the terms:

-5 + 4x = 2x + 11

reorder the terms:

-5 + 4x = 11 + 2x

solving

-5 + 4x = 11 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-5 + 4x + -2x = 11 + 2x + -2x

combine like terms: 4x + -2x = 2x

-5 + 2x = 11 + 2x + -2x

combine like terms: 2x + -2x = 0

-5 + 2x = 11 + 0

-5 + 2x = 11

add '5' to each side of the equation.

-5 + 5 + 2x = 11 + 5

combine like terms: -5 + 5 = 0

0 + 2x = 11 + 5

2x = 11 + 5

combine like terms: 11 + 5 = 16

2x = 16

divide each side by '2'.