Answer:
x = 7 , y = 0
Explanation:
the equation of a vertical line is
x = c ( c is the value of the x- coordinates the line passes through )
the line passes through (7, 0 ) with x- coordinate 7 , then
x = 7 ← equation of vertical line
the equation of a horizontal line is
y = c ( c is the value of the y- coordinates the line passes through )
the line passes through (7, 0 ) with y- coordinate 0 , then
y = 0 ← equation of horizontal line