## Find The Value - College Algebra

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Earlier on, we looked at solving equations which looked something like this.
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Here, we have 3x plus 4 equals 19. Let's consider something slightly different
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however. What if instead, we have the equation y equals 3x plus 4, let's say
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that we want know the value of x when y is equal to 19. Well, we know on one
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hand that we can just use substitution to replace y here with 19 and end up with
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the equation that we saw before. Then, we could isolate x and have an answer for
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it. We can also however use a graph to figure out the x-coordinate when y equals
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19. Please use this graph to find that x value. Also, please take note of the
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scale of the x-axis versus the, the y-axis.
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On the y-axis, every grid line up counts as 2, whereas, on the x-axis, it's only
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1.
Title:
Find The Value - College Algebra
Video Language:
English
Team:
Udacity
Project:
MA008 - College Algebra
Duration:
0:52
 Udacity Robot edited English subtitles for Find The Value - College Algebra Cogi-Admin added a translation

# English subtitles

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