Question

Help!! Definate Medal!!!
Which lines are perpendicular to 5x + 4y = 8?

Choose all answers that are correct.

4y=-5x+4
4y= 5x + 12
5y = 4x + 15
5y = –4x – 15
My answer is 4y=-5x+4.. what do you think

Answer 1

@hero @Nnesha

Answer 2

first write the equation as

y = mx +b

the value m is the slope of th eoriginal line

all perpendicular lines will have slope = -1/m

Answer 3

btw - I think your answer is incorrect...

Answer 4

y = mx +b=4y=-5x+8

Answer 5

you need to show some work - otherwise you can just guess all 4 until I say...

what is the slope of the original line?

then - what is the slope of any perpendicular line..?

Answer 6

4y=-5x+8

so
y= ??

Answer 7

No I wasn't guessing all 4 -.-, you asked me to rewrite the equation in the formula y = mx +b so i did and i wanted you to take me from there.

Answer 8

cause im kinda confused

Answer 9

y=−5/4+2

Answer 10

Slope is −5/4

Answer 11

Y = 2 @MrNood

Answer 12

but im confused from there..:(

Answer 13

@Hero help please

Answer 14

OK so slope of original line is -5/4

and so the slope of any perpendicular line is -1/m
-1 /(-5/4) = 4/5

so which of the answer options has a slope of 4/5?

(hint - the offset value i.e. the constant number does not affect the slope or answer....)