Graph Work and Gradient Rules

Comprehensive vocabulary flashcards covering the rules for drawing graphs, balancing best fit lines, and calculating gradients based on the lecture notes.

Scale Selection Rule

The practice of choosing the largest convenient scale for axes to ensure all readings fit on the graph paper.

Axes Labelling Rule

Each axis must show what is being measured and the units being used.

Point Plotting Symbols

Small x’s or dots with circles used to mark data points on a graph.

Best Fit Line

A straight line or smooth curve drawn closest to most points when they do not form a perfect straight line.

Best Fit Line Balancing (Criterion i)

A requirement where the same number of points are above the line as below the line.

Best Fit Line Balancing (Criterion ii)

A requirement where the points not precisely on the line are at the same distances from the line.

Gradient Calculation Points

New points that ALWAYS lie on the drawn line, used specifically to calculate the gradient.

Graph Title

A required descriptive label identifying the content of the graph.

Gradient Formula

$$\text{Gradient} = \frac{y_2 - y_1}{x_2 - x_1}$$

$$cm^3$$

The unit of measurement used for Volume in the provided graph exercises.

$$kg/m^3$$

The unit of measurement used for Density in the provided graph exercises.

$$N$$

The unit of measurement (Newton) used for Force in Question 4.