Chp. 6 Flashcards
If the inequality sign is less than , less than or equal to, which direction do you shade on graphing
Shade left
Inequalities:
If you multiply or divide by a negative number what must you do to the equation
Switch the inequality sign
If the variable is greater than/greater than or equal to which direction do you shade?
Shade right
How do you write inequalities ?
In set notation
List the steps to solving inequalities with 2 variables
- get rid of parenthesis by distributing
- look for like terms and +/-
- find variables and move 1 if needed by-/+
- work to isolate variable on left side
If the variable is on the right side, what do you do to switch it to the left side
Just switch it and move the var. to the left side and switch inequality
For an And statement to be true…
The graph of the solution must overlap
Does an OR statement need to overlap on a graph?
No but it can
In absolute value statements,equations with the =
Are what type of stAtement
OR statement
In = absolute value equations how do you find the second answer?
Change sign of answer
Ex: |1+2|= 3
Change 3 to -3
What do you do to the absolute value sign to solve equation ?
|2-x|= 3
Just take it away
2-x=3
If the inequality is < or or less than or equal to what type of statement will it be?
AND
In inequality statements what do you do to get the next answer?
Change inequality and other part
If the inequality is > or greater than or equal to what type of statement is it?
OR
If asked to find absolute value for a problem, what is the formula?
*see notes 2/10
|X-middle value| sign half distance
