solve for x: x: -3 (x- 4) <=5 + x
- Thread starter tek
- Start date
Re: solve for x
Solve for x in the same way you would a normal equality. Construct your interval based on the end inequality. Example: If x <= c, than the domain is (-infinity .. c]
Note: your book is wrong.
x -3(x-4) <= 5 + x
-3x + 12 <= 5
-3x <= -7
x >= 7/3 NOT 7/4
Construct your interval accordingly.
Remember to flip your inequality when dividing by a negative number:
if a > b
then a - b > 0
then -b > -a
than -a < -b
Solve for x in the same way you would a normal equality. Construct your interval based on the end inequality. Example: If x <= c, than the domain is (-infinity .. c]
Note: your book is wrong.
x -3(x-4) <= 5 + x
-3x + 12 <= 5
-3x <= -7
x >= 7/3 NOT 7/4
Construct your interval accordingly.
Remember to flip your inequality when dividing by a negative number:
if a > b
then a - b > 0
then -b > -a
than -a < -b
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- Feb 4, 2004
- Messages
- 16,582
Re: solve for x
Eliz.
In English, the prefix "pre" is commonly used to mean "before". A "precalculus" resource covers material that comes before calculus. That's why your book is covering algebra and maybe some trig, but no differential or integral calculus. Calculus will be covered in a calculus book.tek said:
Eliz.