Perlia paid for a dinner and left 20%, or $5.80, in tips. How much was the original bill (without counting the tip)?
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Let's say "c" is a constant, hmmmm any constant, for any value whatsoever of "x", "y" is always that constant, for example, say c = 3, thus y = 3, so a table for it will look like
now, if you plot those points, it'd looks like the picture below.
now, if you plot those points, it'd looks like the picture below.