SOLUTION: <b>how do you solve/graph 2x - 7 = 0</b>
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Question 120231: how do you solve/graph 2x - 7 = 0
Answer by bucky(2189) (Show Source): You can put this solution on YOUR website!
Given:
.
.
To solve this equation for x, first get rid of the -7 on the left side. You can do that by
adding +7 to both sides. Adding +7 to the left side cancels the -7 on the left side and
the equation becomes:
.
.
Now solve for x by dividing both sides by 2 and you have:
.
.
This means that x is always 3.5 ... so any point that has 3.5 for its x value will satisfy
the equation you were originally given.
.
As examples, all of the following points would satisfy the original equation:
.
(3.5, 10)
(3.5, 0)
(3.5, -15)
.
because each of those points has an x value of 3.5
.
How would the graph look on a coordinate system?
.
If you plotted the three points above (and any other point that has 3.5 as its value for x)
the points would line up vertically through the point +3.5 on the x-axis, and the graph
would look like:
.
.
Hope this helps you to understand the problem.
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