The graph of x=8 is a straight line
True or false?
(a) The equation of the x-axis is x = 0.
(b) The line x = 4 is parallel to y-axis
(c) The line y = 8 is perpendicular to x-axis.
(d) The lines x = y and x = − y are perpendicular to each other.
(e) The lines x = 9 and y = 9 are perpendicular to each other.
(f) The graph of y = x2 is a straight line.
(g) The line y = 3x + 4 does not intersect x-axis.
(h) In a rectangular coordinate system, the coordinate axes are chosen such that they form a pair of perpendicular lines.