Answer:



Step-by-step explanation:
Given



Solving (a): n
To solve for n;
We make use of

Substitute values for XY and XZ



Divide through by -6

Solving (b) XY

Substitute 3 for n



Solving (c): XZ


Answer:
y = 1/3x + 6
Step-by-step explanation:
Rearrange equation to get y by itself.
3x + y = -1
y = -3x - 1
Perpendicular = opposite reciprocal. This means that the slope = 1/3
Convert to point-slope form: y - y1 = m (x - x1)
y - 5 = 1/3 (x - (-3))
y - 5 = 1/3 (x + 3)
y - 5 = 1/3x + 1
y = 1/3x + 6