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Match the graph with its equation.

7x + 7y = 0


7x – 7y = –49


7x + 7y = 49


–7x +7y = –49

Match the graph with its equation 7x 7y 0 7x 7y 49 7x 7y 49 7x 7y 49 class=

Respuesta :

D. -7x+7y=-49 matches this graph.

Answer:  The correct option is (D)  [tex]-7x+7y=-49.[/tex]

Step-by-step explanation:  We are given to match the graph with its correct equation.

From the graph, we note that

there is a straight line where the points (7, 0) and (0, -7) lie on it.

So, the slope of the line is given by

[tex]m=\dfrac{-7-0}{0-7}\\\\\\\Rightarrow m=\dfrac{-7}{-7}\\\\\\\Rightarrow m=1.[/tex]

Since the line passes through the point (7, 0), so its equation will be

[tex]y-0=m(x-0)\\\\\Rightarrow y=1(x-7)\\\\\Rightarrow y=x-7\\\\\Rightarrow x-y=7\\\\\Rightarrow -7(x-y)=7\times(-7)\\\\\Rightarrow -7x+7y=-49.[/tex]

Thus, the required equation of the graphed line is [tex]-7x+7y=-49.[/tex]

Option (D) is CORRECT.

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