All PSAT Math Resources
Example Questions
Example Question #133 : Algebra
What values of x make the following statement true?
x – 3 < 9
–12 < x < 6
–6 < x < 12
6 < x < 12
–3 < x < 9
x < 12
–6 < x < 12
Solve the inequality by adding 3 to both sides to get x < 12. Since it is absolute value, x – 3 > –9 must also be solved by adding 3 to both sides so: x > –6 so combined.
Example Question #1 : How To Find The Solution To An Inequality With Addition
If –1 < w < 1, all of the following must also be greater than –1 and less than 1 EXCEPT for which choice?
w/2
w^{2}
w
w^{0.5}
3w/2
3w/2
3w/2 will become greater than 1 as soon as w is greater than two thirds. It will likewise become less than –1 as soon as w is less than negative two thirds. All the other options always return values between –1 and 1.
Example Question #2 : How To Find The Solution To An Inequality With Addition
Solve for .
Absolute value problems always have two sides: one positive and one negative.
First, take the problem as is and drop the absolute value signs for the positive side: z – 3 ≥ 5. When the original inequality is multiplied by –1 we get z – 3 ≤ –5.
Solve each inequality separately to get z ≤ –2 or z ≥ 8 (the inequality sign flips when multiplying or dividing by a negative number).
We can verify the solution by substituting in 0 for z to see if we get a true or false statement. Since –3 ≥ 5 is always false we know we want the two outside inequalities, rather than their intersection.
Example Question #141 : Algebra
If and , then which of the following could be the value of ?
To solve this problem, add the two equations together:
The only answer choice that satisfies this equation is 0, because 0 is less than 4.
Example Question #52 : Equations / Inequalities
If , which of the following could be a value of ?

In order to solve this inequality, you must isolate on one side of the equation.
Therefore, the only option that solves the inequality is .
Example Question #3 : How To Find The Solution To An Inequality With Addition
What values of make the statement true?
First, solve the inequality :
Since we are dealing with absolute value, must also be true; therefore:
Example Question #151 : Algebra
If –1 < n < 1, all of the following could be true EXCEPT:
n^{2} < n
(n1)^{2} > n
16n^{2}  1 = 0
n^{2}  1 > 1
n^{2} < 2n
n^{2}  1 > 1
Example Question #13 : Inequalities
(√(8) / x ) < 2. Which of the following values could be x?
3
1
4
2
All of the answers choices are valid.
1
The equation simplifies to x > 1.41. 1 is the answer.
Example Question #53 : Equations / Inequalities
Solve for x
Example Question #221 : Gre Quantitative Reasoning
We have , find the solution set for this inequality.