Please I Need Help!!!

Examine the graph of the relationship at right.
Use it to estimate:
a.
y when x = -4
b.
y when x = 1
c.
y when x = 4
d.
Is this relationship a function? Why or why not?​

Please I Need HelpExamine the graph of the relationship at rightUse it to estimateay when x 4by when x 1cy when x 4dIs this relationship a function Why or why n class=