Technical analysis is one of the two primary methodologies used to study price behaviour in financial markets, the other being fundamental analysis. While fundamental analysis focuses on economic data and macroeconomic factors, technical analysis involves studying historical price charts to identify patterns, levels, and structures.
Support, resistance, and trend lines are foundational concepts that appear across virtually every technical analysis educational resource — from beginner textbooks to CFA curriculum materials covering market analysis.
What Is Support?
In technical analysis education, support refers to a price level where historical price data shows that buying pressure has previously been strong enough to halt or reverse a downward price move. In simple terms, it's a level that price has historically had difficulty falling below — at least temporarily.
The educational concept behind support is that market participants who identify a level as historically significant may react when price returns to that level, creating a zone of buying interest. This is a behavioural and observational concept, not a predictive one — price does not always respect historical support levels.
What Is Resistance?
Resistance is the inverse of support. It refers to a price level where historical price data shows that selling pressure has previously been strong enough to halt or reverse an upward price move. It is a level that price has historically had difficulty breaking above — at least temporarily.
Support and resistance are studied as zones rather than exact price points. Because the forex market involves many participants with different entry levels, these zones represent areas of interest rather than precise lines on a chart.
Educational concept — role reversal: A commonly taught idea in technical analysis is that when a support level is broken to the downside, it can subsequently act as resistance on a potential return to that level. The inverse applies to broken resistance levels. This concept of "role reversal" appears in most intermediate-level technical analysis education materials.
Understanding Trend Lines
A trend line is a straight line drawn on a price chart to represent the direction of price movement over a period. In educational terms, trend lines help visualise whether price is broadly moving upward, downward, or sideways — and at what angle.
How trend lines are drawn in educational contexts:
- Uptrend line: Drawn by connecting a series of higher lows. The line runs diagonally upward from left to right and represents dynamic support in an upward-moving market.
- Downtrend line: Drawn by connecting a series of lower highs. The line runs diagonally downward from left to right and represents dynamic resistance in a downward-moving market.
- Sideways / horizontal: When price moves in a range between two relatively consistent levels, horizontal support and resistance lines are often more appropriate than diagonal trend lines.
The validity of a trend line in educational analysis is typically considered stronger when it has been tested — meaning price has returned to and bounced from the line — multiple times. A line touched only once carries less analytical weight in educational frameworks.
Market Structure: Highs and Lows
Underlying the concepts of support, resistance, and trend lines is the broader educational topic of market structure. Market structure refers to the pattern of highs and lows that price creates over time:
- Higher highs and higher lows — studied as characteristic of an upward-trending structure
- Lower highs and lower lows — studied as characteristic of a downward-trending structure
- Equal highs and equal lows — studied as characteristic of a ranging or consolidating structure
Reading market structure is taught as a foundational skill before introducing more advanced analytical tools such as indicators or oscillators. Understanding the structural context of a chart is a prerequisite for meaningful technical analysis study.
Continue your technical analysis education with our guide on reading candlestick charts.