Kevin plotted a linear equation on a graph with 18 as the y-intercept. Which of the following could be the equation plotted by Kevin?

To determine which equation could be plotted by Kevin with a y-intercept of 18, we need to look for linear equations in the form y = mx + b, where m represents the slope and b represents the y-intercept.

The equations that could potentially be plotted by Kevin with a y-intercept of 18 are:

1) y = 5x + 18
2) y = -3x + 18
3) y = 0.5x + 18
4) y = -2x + 18

To confirm if these equations could be plotted by Kevin, we can check if they all have the same y-intercept of 18 and if they result in a straight line when graphed.

Incomplete