Question

Line BC has an equation of a line y = 2x + 3, and line EF has an equation of a line y = -1/2 x + 4. These two equations represent (5 points)
Select one:
a. parallel lines because the slopes of the lines are equal
b. perpendicular lines because the slopes are opposite reciprocals
c. the same line when graphed
d. lines that intersect, but not at a right angle

Answer 1

@ganeshie8

Answer 2

to determine if they're parallel, perpendicular, or just intersecting, just look at the slope

Answer 3

if the slope is the same, then the line is parallel (with the exception of when the y-intercept is the same, then the lines are just overlapping)

Answer 4

if the two slopes are negative reciprocal of each other, then they will form a right angle (aka perpendicular lines)

Answer 5

if they're neither one, then they're just intersecting

Answer 6

so what would it be

Answer 7

well... is 2x equal to (-1/2)x?

Answer 8

no

Answer 9

ok, so the first and third answer is eliminated

Answer 10

ok ok what

Answer 11

are they negative reciprocal?

Answer 12

else can we do to figure out the answer

Answer 13

B says they are opposite reciprocals

Answer 14

yea, so are the two slopes negative reciprocal? If they are then, that's your answer; if not, then the last one is

Answer 15

do you know how to find it?

Answer 16

So its B

Answer 17

@nincompoop

Answer 18

yup