How would I write this inequality in slope-intercept form?
2x - 4y 8

Question

How would I write this inequality in slope-intercept form?
2x - 4y > 8

timmyk14 · Answer

I know that slope-intercept form is y = mx + b
Where m represents the slope and b represents the y-intercept.

timmyk14 · Answer

Is it -4y > -2x + 8?? @Destinymasha

timmyk14 · Answer

Do I have to divide both sides by -4?

timmyk14 · Answer

If I do then...y < -2x -2 ??

timmyk14 · Answer

Do you know anything about converting inequalities to slope-intercept form, @Abhisar ?

timmyk14 · Answer

@mathstudent55 , are you familiar with slope-intercept form and inequalities (with two variables)?

sleepyjess · Answer

-4y>-2x+8 is a good start

sleepyjess · Answer

and you are correct out dividing by -4 but your calculation is not correct

haleyelizabeth2017 · Answer

and remember when you divide an inequality by a negative number, the symbol flips so in this case, it goes from > to <

timmyk14 · Answer

This is what I did...
2x - 4y > 8
Divide both sides by -4
2x + y < -2 (because 8 divided by -4 is -2)
Then subtract 2x from both sides...
y < -2x - 2

So, what is wrong here

timmyk14 · Answer

@haleyelizabeth2017 I know :p

haleyelizabeth2017 · Answer

you need to subtract first lol

timmyk14 · Answer

Following the rule of PEMDAS...

timmyk14 · Answer

Division and multiplication comes before addition and subtraction

haleyelizabeth2017 · Answer

so go from:
2x-4y>8 to
-4y>-2x+8 then divide
y<1/2y-2

haleyelizabeth2017 · Answer

pemdas doesn't really work for these....believe me, I already took this class and got a high A lol

timmyk14 · Answer

You cannot divide 2x by -4y. They have different base. I'm confused as hell right now

sleepyjess · Answer

When moving things from one side to another it goes SADMEP

haleyelizabeth2017 · Answer

so if you do it your way, it will still turn out the same way.
2x-4y>8
-1/2x+y<-2
y<1/2x-2

haleyelizabeth2017 · Answer

you divide by the coefficient (-4) not the whole thing

haleyelizabeth2017 · Answer

I never learned that @sleepyjess! Well I guess we can all learn something new every day :P

timmyk14 · Answer

You know..I think it would be best for me to just ask my dad. Because I honestly feel that you guys are wrong. If you are right then you'll get a medal. I'll be back...

haleyelizabeth2017 · Answer

I just learned how to do it, not SADMEP........

haleyelizabeth2017 · Answer

okay

timmyk14 · Answer

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I decided to make this as I wait for my dad to finish painting a wall...