Final answer:
To write the equation with a slope of 0.5 and a y-intercept of (0, -2), the correct equation using the slope-intercept form is y = 0.5x - 2.
Step-by-step explanation:
To write an equation with a slope of 0.5 and a y-intercept of (0, -2), you can use the slope-intercept form of a linear equation, which is y = mx + b. Here, m represents the slope, x represents the independent variable and b represents the y-intercept. Given that the slope is 0.5 and the y-intercept is -2, the equation of the line is y = 0.5x - 2.