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What will the graph of (4x+7y=2) and (8x+13y=5) show?

Answer and explanation

Correct answer: Lines intersecting at one point

The graph of each linear equation in two variables is a straight line. Two such lines intersect at exactly one point when their slopes are different. In standard form, the slope of \(ax+by=c\) is \(-a/b\), provided \(b\ne0\). Equal coefficient ratios would indicate parallel or coincident lines, but unequal ratios give different slopes.

For the first equation, the slope is \(-4/7\). For the second, it is \(-8/13\). These are not equal, since \(4/7\ne8/13\). Therefore the lines cannot be parallel or identical; they meet at one and only one point. The correct description is option C, lines intersecting at one point.

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Linear EquationsGraphUnique Solution

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