Find the slope for each equation. If they are parallel, then they will have the same slope. If they are perpendicular, their slopes will be negative reciprocals (ex. if the slope is 5, the opposite reciprocal is -1/5)
when you solve for y.. you should get y=-2x – 5 and y= -2x + 1/2
you have a -2x on both sides, so they are both going to be slanting the same way (negative) if you were to graph it.
which I did, and they were parallel on the graph.
February 22nd, 2010 12:35 pm
Find the slope for each equation. If they are parallel, then they will have the same slope. If they are perpendicular, their slopes will be negative reciprocals (ex. if the slope is 5, the opposite reciprocal is -1/5)
February 22nd, 2010 12:35 pm
find their slope. equal slope means the lines are parallel. If the numerator and denominator are switched, the lines are perpendicular.
February 22nd, 2010 12:35 pm
when you solve for y.. you should get y=-2x – 5 and y= -2x + 1/2
you have a -2x on both sides, so they are both going to be slanting the same way (negative) if you were to graph it.
which I did, and they were parallel on the graph.