Decide whether the pair of lines is parallel, perpendicular, or neither.
5x+4y=10
4x+5y=3
3 answers
Put both equations in the form of a straight line which is y = mx + b and determine m for each line. If m is the same, the lines are parallel.
y = -(5/4)x + 10/4
and
y = -(4/5)x + 3/5
not the same slope because -5/4 is not -4/5
not perpendicular because -(5/4)/-(4/5) is not -1 (it is +1)
and
y = -(4/5)x + 3/5
not the same slope because -5/4 is not -4/5
not perpendicular because -(5/4)/-(4/5) is not -1 (it is +1)
Determine whether the two lines 5x + 4y=8 and 4x+5y=10 are parallel, perpendicular, or neither. Why?
2 answers