What type of lines are these?

1 ⤊

x+2y=7 and 2x+4y=21
1.perpendicular
2.parallel
3.neither

2007-12-10 04:07:51 · 2 answers · asked by ivan m 2 in Science & Mathematics ➔ Mathematics

parallel, make y the subject in each and u will see the gradient is 1/2, 2/4 respectively, since 2/4=1/2 they have same gradient hence parallel.

2007-12-10 04:15:59 · answer #1 · answered by raja 3 · 1⤊ 0⤋

2. parallel

They have the same slope, -1/2

2007-12-10 04:17:49 · answer #2 · answered by Demiurge42 7 · 0⤊ 0⤋