True!
The Cartesian coordinate system is formed by two perpendicular axes, which are the x-axis and y-axis. In this problem, we are given two lines:
[tex]x=4 \ and \ y=5[/tex]
Since the x and y-axes are perpendicular, then the lines [tex]x=4 \ and \ y=5[/tex] are also perpendicular.
Cartesian coordinate system: https://brainly.com/question/2141683
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