I need help make sure to round it to the nearest 10th

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Which equation represents the function on the graph?

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.