In the equation 3x + 7y =21, at what point is the x-axis intersected?

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Accepted Answer

Thexaccess is intersected at the point where the y-coordinate is 0 (y= 0). Substitute 0 for theyvariable in the equation. 3x+ 7y= 21 = 3x+ 7(0) = 21 = 3x= 21. Therefore,x= 7. The point's coordinates are (7, 0).

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