What’s on the Absolute Value Equations poster
The rule, 4 worked examples, and the mistake everyone makes.
- An absolute value equation splits into two cases: the inside equals the positive valu…
- |x| = a → x = a or x = −a
- |x| = 5 = x = 5 or −5
- |x − 3| = 7 = x = 10 or −4
- |x| = −2 = no solution
- |2x + 1| = 9 = x = 4 or −5
- Common mistake: |x − 3| = 7 → x = 10 only → x = 10 or x = −4
Isolate the absolute value first. Only then split into cases.
Questions about the Absolute Value Equations poster
- What’s on the Absolute Value Equations poster?
- The rule, 4 worked examples, and the mistake everyone makes. An absolute value equation splits into two cases: the inside equals the positive valu…; |x| = a → x = a or x = −a; |x| = 5 = x = 5 or −5; |x − 3| = 7 = x = 10 or −4; |x| = −2 = no solution; |2x + 1| = 9 = x = 4 or −5; Common mistake: |x − 3| = 7 → x = 10 only → x = 10 or x = −4. Isolate the absolute value first. Only then split into cases.
- Who is the Absolute Value Equations poster for?
- Absolute Value Equations is filed under 9th Grade (ages 14–15), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting math, and to the parent or teacher answering the question at the kitchen table.
- When should you use the Absolute Value Equations poster?
- Split into two equations before solving anything. A wall chart earns its place by being glanceable from where the work is happening, so Absolute Value Equations belongs on the wall where that math work actually happens, within glancing distance, rather than filed away.
- What other posters go with Absolute Value Equations?
- Arithmetic Sequences, Difference of Squares and Exponential Functions sit alongside Absolute Value Equations in the 9th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Arithmetic SequencesDifference of SquaresExponential Functions
- Is the Absolute Value Equations poster free to download and print?
- Yes. Absolute Value Equations downloads as a free PDF with no account, no email and no watermark, like everything else in the 9th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Absolute Value Equations poster print at?
- Absolute Value Equations is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Absolute Value Equations loses nothing.Printing guide
Related posters
Charts that sit alongside Absolute Value Equations on the same wall.
Browse every 9th Grade poster, or start from the full catalogue.