Question 178476
y=-9x+1....eq 1
y=9x+1.....eq 2
y=1/9x+1...eq 3
y=-9x+3....eq 4
:
parallel lines have equal slopes.......these are written in y=mx+b format so the coefficient in from of the x is the slope
:
-9 is equal to -9
:
therefore eq's 1 and 4 are parallel lines