We can’t because we don’t know your login and password
The triangle was translated 3 units to the right horizontally. (x+3, y)
You can just move one of the points to see how it moved.
For this case we have that by definition, a linear equation is of the form:

The variable (s) involved in the equation always have exponent 1.
Some examples of linear equations are:

Answer:
In a linear equation the variables have exponent 1.

Your question is incomplete.