Slope-intercept form is usually written in the format y = mx + b, where m represents the slope of the line and b represents the y-intercept.
When your y-intercept is a fraction, you still follow the same format, but you simply replace b with the fractional value. For example, if the slope of your line is 2 and the y-intercept is 1/2, you would write the equation as:
y = 2x + 1/2
This equation indicates that for every unit increase in x, y increases by 2 units, starting from a y-value of 1/2 when x is zero.