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When solving an inequality how do you know to change the symbol?
Wiki User
∙ 12y ago
When adding or subtracting from both sides, the symbol doesn't change. The symbol only reverses when both sides are multiplied or divided by a negative number, because doing so makes the lesser side greater and the larger side smaller.
Consider:
5>-3 *-1 -5<3
6>4 *-1 -6<-4
Wiki User
∙ 12y ago
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How do you know when to reverse the direction of an inequality symbol?
u only reverse the sign when u multiply or divide by a NEGATIVE number...otherwise u don't change the direction
When the variable is on the left of the inequality symbol is represented by an open circle and a ray going to the right?
how the hell should i know
How do you know if the number or the symbol comes first in an inequality?
In simple terms, it doesn't matter. x<6 is the same as 6>x.
How is solving for a specified variable in a formula similar to finding a solution for an equation or inequality?
With a formula, you know the variable's value, and you have to calculate the value of the function of it. With an equation, you know the function's value, and you have to calculate the value of the variable.
What is a number that can change called?
A variable is a symbol for a number that we don't yet know. It is usually a letter such as x or y.
How do you know when to reverse the direction of an inequality symbol?
u only reverse the sign when u multiply or divide by a NEGATIVE number...otherwise u don't change the direction
When the variable is on the left of the inequality symbol is represented by an open circle and a ray going to the right?
how the hell should i know
How do you know if the number or the symbol comes first in an inequality?
In simple terms, it doesn't matter. x<6 is the same as 6>x.
How is solving for a specified variable in a formula different to finding a solution for an equation or inequality?
With a formula, you know the variable's value, and you have to calculate the value of the function of it. With an equation, you know the function's value, and you have to calculate the value of the variable.
How is solving for a specified variable in a formula similar to finding a solution for an equation or inequality?
With a formula, you know the variable's value, and you have to calculate the value of the function of it. With an equation, you know the function's value, and you have to calculate the value of the variable.
What is the mathematical symbol for no change?
There is no particular symbol for "no change". However, if you know the quantity that has not changed, for example represented by H, you could write "ΔH = 0". Δ is the accepted symbol for "change in/of .." so if the change equals zero then there is no change.
How do you know weather to shade above or below the line when graphing an inequality on the coordinate plane?
If the inequality has a > or ≥ sign, you shade above the line. If the inequality has a < or ≤ sign, you shade below it. Obviously, just an = is an equation, not an inequality.
What is a number that can change called?
A variable is a symbol for a number that we don't yet know. It is usually a letter such as x or y.
Who fought against racial inequality in the US?
well..... i think that martin Luther king fought AGAINST injustice and inequality because he made everyone consider and know that injustice and inequality is not right in the human race.
How do you write an inequality as two inequalities?
Google it, I dont know :P
When you graph inequalities how do you know what to shade?
Pick a test point, (the origin is the most convenient unless the line of the inequality falls on it), and plug it into the same linear inequality. If the test point makes the inequality true, then shade that side of the line. If the test point makes the inequality false, then shade the opposite side of the line.
How do you know when to use the less than symbol and when to use the less than or equal to symbol when writing an inequality for a situation?
It depends upon whether the inequality is strictly less than (<), or if it is less than or could be equal (≤). For example: if x < 6, x can have any value less than 6, but cannot have the value 6; but if x ≤ 6, x can have any value less than 6, but can also have the value 6. Or put another way, x = 6 is NOT a solution of x < 6, but IS a solution to x ≤ 6.
