The parabola with the vertical axis has its vertex at originand passes through point (7,7). Parabola intersects line y=6 at two points. Length of segment joining the points is.
i. 14
ii. 13
iii. 12
iv. 8.6
v. 6.5
Why do have to plug in point (7,7) to that line formula? Describe problem with drawing its graph.