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are these 2 equations parallel?
y=2x+5
-2x+y=-2
thanks, and no answers such as "x" and nothing else like on person has been doing
19 Answers
- Anonymous1 decade agoFavorite Answer
yes
cuz
y=mx+b
mx= the slope of the line
so..
y= 2x+5
slope = 2
-2x+y = -2
move the 2 over to the other side
y=2x-2
slope = 2
YES they are PARALLEL
FYI - parallel slopes is when 2 lines have the same slope EX: this problem
-perpendicular lines is when 2 lines have the opposite slope EX: Line one has a slope of 5, in order to be perpendicular line 2 slope would have to be -1/5 (negative)
- Anonymous1 decade ago
Parallel equations have the same slope. So, what I would do, I would solve the second equation for y first:
-2x+y=-2
y=-2+2x
So, the slope of this equation is 2, which is the same as the first one, meaning that, yes, the two equations are parallel.
Source(s): Grade 10 math - Anonymous1 decade ago
yes, because when u move the -2x to the right side, it becomes 2x which is exactly the same as the other slope. When two slopes are the same the lines are parallel.
- 1 decade ago
Rewrite the second equation in slope-intercept form
y=2x-2, y=2x+5
yes, they are parallel because they both have slopes of 2
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- Anonymous1 decade ago
leave y=2x + 5 alone
for other eq... you..
add 2x to each side so its y= 2x -2
parallel lines = same slope
slope of line 1 = 2x
slope of line 2 = 2x
parallel yes
- Jim ((C.A.B.))Lv 61 decade ago
Solve both for y so they are in slope-intercept form. One is already solved for y, so you just need to adjust the other:
-2x+y=-2
y=2x-2
Therefore your two equations are:
y=2x-2
y=2x+5
These equations have the same slope (coefficient of x), so they are indeed parallel.
- 1 decade ago
y=mx+b where m is the slope
y=2x+5 and y=2x-2 have the same number for m, the same slope, and are therefore parrallel
- Just Dance ☮Lv 41 decade ago
Yupp.
y=2x+5
y=2x-2
See how they both have 2x? That means that they both have the same slopes, which means that they are parallel.
- 1 decade ago
yes.
set -2x + y = -2 to y =mx+ b form.
y= 2x -2
equal slope = parallel lines.
- pianist09Lv 41 decade ago
yes! if you see that both the numbers in front of x are the same, they have equal slopes which means they are parallel