can anyone tell me how 1-2x greater then or equal to 0 is to the left and not right?
#sketching graphs
sage aspen
Like yk howthe squiggley line is to the left, i thought if its greater then or equal it will always be to the right?
prime compass
So first
1 - 2x >= 0 right
-1 from both sides
-2x >= -1
Now, to get x you need to divide by -2. EVERYTIME you divide by a NEGATIVE, the inequality symbol changes round
So
x <= 1/2
Which is the squiggly line
sage aspen
Which is the squiggly line
ahhh okayy!
one more thing
could you put this in word form?
is it x is less then 2 and less then 4?
@prime compass
final kiln
X is greater than 2 and less than 4
sage aspen
X is greater than 2 and less than 4
ahh okayyy
what if its 4>x>6
is that x is less then x and greater then 6
?
final kiln
This would not be written that way because if x is greater than 6 it cannot be less than 4. Instead you would write 2 separate inequalities
In this case it would be x<4 U x>6, where U is the Union
sage aspen
In this case it would be x<4 U x>6, where U is the Union
how would x be less then 4 but greater then 6?
final kiln
It could be any number that is greater than 6 and any number that is less than 4
Like this
sage aspen
It could be any number that is greater than 6 and any number that is less than 4
i get u but like for examples 2 is less then 4 but isnt greater then 6
final kiln
That's okay. It only has to satisfy one of the inequalities as it's the union
warm trout
essentially you have two lines, y = 0 (the x axis) and y = 1- 2x
1-2x is above y = 0
when x <= 1/2
sage aspen
That's okay. It only has to satisfy one of the inequalities as it's the union
ohhh i seee
thanks
sage aspen
essentially you have two lines, y = 0 (the x axis) and y = 1- 2x
thanks
sage aspen
That's okay. It only has to satisfy one of the inequalities as it's the union
hi
can u explain to me how y=0 is the x axis?
final kiln
The line y=5 for example would be a horizontal line from (0,5) to infinity
final kiln
Yes
final kiln
Also yes
sage aspen
thankss
