Question

What is the slope of the line that is perpendicular to the line whose equation is 2x + y = 4.



A.) -2
B.) -1/2
C.) 1/2
D.) 2

Answer 1

2x + y = 4.
can u pls tell me vat u get when u solve the above equation for y?

Answer 2

What is true about the slopes of perpendicular lines?

Answer 3

2?

Answer 4

nope:(
well have u solved the equation for y?

Answer 5

yea and i got 2

Answer 6

2? can u pls show me ur work?

Answer 7

@DvonCruse

Answer 8

2x + y = 4
-2 -2

Answer 9

u have to subtract 2x both sides.
2x+y-2x=4-2x
y=-2x+4
Nw compare this equation with y=mx+c and pls tell me the value of m.
here m is the slope of the given line

Answer 10

i did subtract 2x

Answer 11

after subtracting what did u get? @DvonCruse

Answer 12

2

Answer 13

what is that 2?

Answer 14

-2

Answer 15

is that the value of m?

Answer 16

yea

Answer 17

ya it is right:)

Answer 18

let the required slope be m_1.
the product of the slopes of the perpendicular lines is equal to -1.
that is
m*m_1=-1
-2*m_1=-1
so vat is m_1?

Answer 19

thank you!

Answer 20

Welcome:)
have u found m_1?

Answer 21

@DvonCruse

Answer 22

m_1?

Answer 23

m_1 is the required slope