Reveal Constants
2x + 4y - 3
Has one constant -3. Negative 3 is a constant because it is not paired with a variable therefore the only value it can ever have is -3. (It's constant meaning it never changes, just like in English!)
2x + 4y - 3
Has one constant -3. Negative 3 is a constant because it is not paired with a variable therefore the only value it can ever have is -3. (It's constant meaning it never changes, just like in English!)