The slope of every horizontal line is 0 because that is based on the formula. If it's horizontal on the x axis for example, the point slope will be 0,0, also the horizontal line is the numerator, i think. And the undefined slope is vertical because it's the denominator.
The answer to this, is your third option or "C". This is because "C" is the only option where the x values of the coordinate doesn't repeat<span />
The cost of 5 ounces of raisins for $1.49 is 29.8 cents per ounce
The cost of 12 ounces of raisins for $3.59 is 29.91 cents per ounce.
Therefore, Choice A is the lowest price per ounce.
