Answer:
neither
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = [tex]\frac{85}{23}[/tex] x - 99 ← is in slope- intercept form
with slope m = [tex]\frac{85}{23}[/tex]
Parallel lines have equal slopes
slope of line b = [tex]\frac{4}{85}[/tex] ≠ [tex]\frac{85}{23}[/tex] ← lines are not parallel
Given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{\frac{85}{23} }[/tex] = - [tex]\frac{23}{85}[/tex] ≠ [tex]\frac{4}{85}[/tex] ← lines are not perpendicular
Thus lines a and b are neither parallel nor perpendicular
