C1 Inequality Help
Im unsure on how to do the number line part... ugh. Could anyone help. thanks
You've done 10-2x<5 wrong, when you divide by a negative number you have to switch the inequality sign.
Original post by NotNotBatman
You've done 10-2x<5 wrong, when you divide by a negative number you have to switch the inequality sign.
ohhh my bad. So its x >2.5?
Original post by junayd1998
ohhh my bad. So its x >2.5?
Yep. Why didn't you just move the 2x across as well as the 5?
You'd get 5<2x and just divide by 2. No need to mess around with negatives.
Original post by junayd1998
ohhh my bad. So its x >2.5?
Yes.
When you draw the number line, you just need to see the region where it overlaps, to see where both inequalities hold.
Original post by RDKGames
Yep. Why didn't you just move the 2x across as well as the 5?
You'd get 5<2x and just divide by 2. No need to mess around with negatives.
You'd get 5<2x and just divide by 2. No need to mess around with negatives.
Yeah thats true my bad.
Original post by NotNotBatman
Yes.
When you draw the number line, you just need to see the region where it overlaps, to see where both inequalities hold.
When you draw the number line, you just need to see the region where it overlaps, to see where both inequalities hold.
Oh okay i get it i got X>3
Original post by junayd1998
Oh okay i get it i got X>3
Yes, that's right.
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