Construct line m such that the y-coordinate of every point is 1 1/2 and construct line n such that the z-coordinate of every point is 5 1/2

Check below

Step-by-step explanation:

Hi there!

1)Assuming that we're dealing with a Three Dimensional plane, with their three axes xyz.

To construct a line m in which every y-coordinate is y= , to have the y -coordinate will be constant on  .

Similarly, the same for the line n with its z-coordinate fixed on  

2) Since we're on a 3D plane with not two but three axes x, y, and z, the line in 2D (just x and y view) will be seen as planes. Check the second picture, please.