It is called the point of intersection. It will also be the value that satisfies the equation F(x)=G(x) were F and G of x are functions( that are intersecting).
No, it is called an intercept.
In the context of two parallel lines and an intercept, they are called interior angles.
Intercept
Unless they are the exact same lines, no. Parallel lines do not touch. If two lines have the same intercept value, they share a point, and therefore touch.
Knowing that they have the same y-intercept, and knowing nothing else, the only thing you can say about the two lines is that they have the same y-intercept. That fact doesn't tell you anything else about them.
Parallel
the point of intersecting
Because a linear function just has to be a strait line which is not vertical at any point (stait), the two lines can be positioned anywhere on a graph with the same y intercepts. For instance, you could have a big "x" on the graph, where the lines cross on the y line, and have their y intercepts be the same.
The intercept
yes two lines that are the same line are parallel because they continue forever and do not intercept.
No. In order to be parallel, two lines would have to have the same slope, and different intercepts.Why? Two lines with different slopes, but the same intercepts would result in two intersecting lines. Two lines with the same slope, and the same intercept would result in the same line. Two lines with the same slope, and different intercepts would be parallel.
no solution
When two lines intercept equal opposite vertical angles are formed and if the lines are perpendicular then right angles are formed
No, they cannot - unless the two lines are effectively the same line.
Two linear equations (or lines) with the same y-intercept and different slopes are intersecting lines. They intersect at the y-intercept. If the slopes are negative reciprocals (ex: one slope is 3 and one slope it -1/3) then they are perpendicular lines.
you put the y intercept at 2, the x intercept at -2/3 and you join those two points.
unequal.