MEDAL
Which point could be removed in order to make the relation a function?

{(–9, –8), (–8, 4), (0, –2), (4, 8), (0, 8), (1, 2)}

(0, 8)
(4, 8)
(1, 2)
(–9, –8)

Question

MEDAL
Which point could be removed in order to make the relation a function?

{(–9, –8), (–8, 4), (0, –2), (4, 8), (0, 8), (1, 2)}

 (0, 8)
 (4, 8)
 (1, 2)
 (–9, –8)

skullpatrol · Answer

Any ideas?

skullpatrol · Answer

A function is a relation in which different ordered pairs have different FIRST coordinates. 

With that^ in mind compare the given ordered pairs...

skullpatrol · Answer

...think of the ordered pairs as being in the form ( x , y )

skullpatrol · Answer

Ask yourself "are there any ordered pairs that have the SAME first coordinate?"

skullpatrol · Answer

$$\Huge {(–9, –8), (–8, 4), (0, –2), (4, 8), (0, 8), (1, 2)}$$

skullpatrol · Answer

Look at the first number x in ( x , y ). 

Are any of them the same?

skullpatrol · Answer

$$\large {(–9, –8), (–8, 4), (0^{*}, –2), (4, 8), (0^{*}, 8), (1, 2)}$$

gunsodo · Answer

(0,8)
Because an x-value can have only 1 y-value

skullpatrol · Answer

yup, that^ is one possible answer, but I want the asker to realize that (0,-2) is also a possible answer ;)

zzr0ck3r · Answer

or all of them:)

milo123 · Answer

sorry i didn't close the question! i thought i logged off! thanks anyway guys!