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serg [7]
3 years ago
11

On the graph of the equation 5x - y = 8, the point whose y-coordinate is 7 has an x-coordinates of ?

Mathematics
2 answers:
xxMikexx [17]3 years ago
8 0

Answer:  x = 3

<u>Step-by-step explanation:</u>

5x - y = 8

It is given that y = 7, so substitute "y" with "7" into the equation:

5x - (7) = 8        <em>substituted y with 7</em>

5x        = 15       <em>added 7 to both sides</em>

 x         = 3        <em>divided both sides by 5</em>


When y = 7, then x = 3   ⇒   the coordinate is (3, 7)

Lemur [1.5K]3 years ago
3 0

Answer:

x = 3

Step-by-step explanation:

To find the x-coordinate, substitute y = 8 into the equation abd solve for x

5x - 7 = 8 ( add 7 to both sides )

5x = 15 ( divide both sides by 5 )

x = 3

Thus (3, 7) is a solution to the equation


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