In the equation \( y = 25 + 5x \):
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The y-intercept is 25. This means that if you do not visit the gym (i.e., when \( x = 0 \)), the cost of the gym membership is $25. This represents the fixed cost of the membership, which you pay regardless of the number of visits.
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The slope is 5. This means that for each additional visit to the gym (i.e., for each increase of 1 in \( x \)), the cost increases by $5. This represents the variable cost associated with each gym visit.