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If y = 2x + 1, what is the slope of the line?

  1. 0

  2. 2

  3. -1

  4. 1

The correct answer is: 2

The slope of a line is a measure of the steepness and direction of the line. In the equation y=2x+1, the number that is multiplied with the x variable represents the slope. In this case, the slope is 2 as indicated by the coefficient of x. Option A is incorrect because a slope of 0 would produce a horizontal line, which is not the case in the given equation. Option C is incorrect because a slope of -1 would produce a line with a negative slope, which is not the case in the given equation. Option D is incorrect because a slope of 1 would produce a line with a positive slope, but the given equation has a slope of 2.