Can someone give me the answers please

5. option B and 6. option A

Step-by-step explanation:

5. x = 7

4 + x = 11

4 - 4 + x = 11 - 4

x = 7

6. K - 8.79 = 12.5

K - 8.79 + 8.79 = 12.5 + 8.79

K = 21.29

Hope this helps, thank you :) !!

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5