How do you know you need to create a linear equation solve a word problem?

Answer 1
I assume that the equation you would be creating is in slope-intercept form, or #y= mx + b#.

If so, there is a simple answer. You can tell that you need to create a linear equation by the information the problem gives you. The problem should list the Y- intercept, a starting amount of something and a slope, or a rate of change.

For example, here is a problem:

Maddie and Cindy are starting their very own babysitting business. They charge parents 5dollarsrightwhentheycomeinand5 dollars right when they come in and 2 for every hour they need to babysit a child. How can they calculate how much they will charge for an evening of babysitting?

Your formula would be: #y= 2x + 5#
Your #x# value would be hour(s) and your #y# value would be total cost. After you write your equation you can simply solve it.
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Answer 2

You need to create a linear equation to solve a word problem if the problem involves relationships that can be represented by a straight line, such as proportional relationships, constant rates, or situations where there is a direct relationship between two variables.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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