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If two lines have the same slope and the same (y)-intercept, what will be the solutions of the pair?

Answer and explanation

Correct answer: Infinitely many solutions

The direct answer is option C: infinitely many solutions. A line written as y=mx+c is determined by its slope m and y-intercept c. If two lines have the same slope and the same y-intercept, their equations are identical, so they are the very same line. Every point on that line satisfies both equations, giving infinitely many common solutions. Option A, no solution, applies to distinct parallel lines: they have the same slope but different intercepts. Option B, one unique solution, applies to lines with different slopes that cross once. Option C is correct because identical lines overlap at every point. Option D, exactly two solutions, is not a possible result for a pair of ordinary straight-line equations. Remember: same slope plus same intercept means coincident lines, not merely parallel lines.

Related tags

Linear EquationsHardSlopeInfinite Solutions

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