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What is the y-intercept of the equation y = 5x + 18?

  1. 5

  2. 18

  3. 0

  4. 1

The correct answer is: 18

The y-intercept of an equation represents the point where the line crosses the y-axis. In the given equation, y = 5x + 18, the value of 18 is the constant term and is being added to the y-value. This means that at x=0 (the y-axis), the value of y will be 18. All other options, A (5), C (0), and D (1) are incorrect as they do not represent the y-intercept. Option A (5) is the coefficient of x and represents the slope of the line, while options C (0) and D (1) do not even appear in the equation. Therefore, the correct answer is B (18) as it represents the y-intercept of the given equation.