Can a linear function be continuous but not have a domain and range of all real numbers

To show that polygon abcde is congruent to polygon fghij, a must be used to make the two polygons coincide. a sequence of two transformations that can be used to show that polygon abcde is congruent to polygon fghij is .

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

How do you solving the solution of each system using elimination?