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Lily has $45 in her school lunch account. If she spends $2.50 each day, which graph represents Lily's account balance, y, after she buys lunch for x days?

Respuesta :

y = -2.5x + 45

That's your equation. Your y-intercept would be 45 because that's what she started with. It would be a negative slope as well.
MrRoyal

The graph that represents Lily's balance has an equation of y = 45 - 2.5x

How to determine the graph?

The given parameters are:

  • Initial amount = 45
  • Amount spent each day = 2.50

Let the number of days be x and the amount left be y.

So, we have:

y = Initial amount - Amount spent each day * x

This gives

y = 45 - 2.5x

Hence, the graph that represents Lily's balance has an equation of y = 45 - 2.5x

Read more about graphs at:

https://brainly.com/question/14323743

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