different between equations vs functions

equations

equations From the web:

• what equations have no solution
• what equations equal 24
• what equations are not functions
• what equations represent linear functions
• what equations are linear
• what equations are functions
• what equations equal 12
• what equations equal 18

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functions

functions From the web:

• what functions as a symbol in this excerpt
• what functions are performed by the brainstem
• what functions are performed by the cerebellum
• what functions are performed by connective tissue
• what functions do proteins perform
• what functions have asymptotes
• what functions are not differentiable
• what functions does bios perform