look at this graph: \nwrite the equation of the line.

Explanation:

Step1: Identify line type

The graph is a vertical line, so its equation has the form ( x = a ), where ( a ) is the x - coordinate of any point on the line.

Step2: Find x - coordinate

The vertical line passes through ( x = 4 ) (since for all points on this line, the x - value is 4, regardless of y). So the equation is ( x = 4 ).

Answer:

( x = 4 )