# Algebra I Chapter 6 Vocab

### 15 terms by DrJackTheMidget

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### Absolute Value Equation

A V-shaped graph that points upward or downward

### Correlation Coefficient

A variable from a graphing calculator which tells you how closely the equation models the data

### Line of Best Fit

The trend line that shows the relationship between two sets of data most accurately

### Linear Equation

An equation whose graph is a line.

ex. 2 and -1/2

### Parallel Lines

Lines in the same plane that never intersect

### Perpendicular Lines

Lines that intersect to form right angles

### Point-Slope Form

ex. y-y1 = m(x-x1), where m is the slope and (x1,y1) is the point the line is passing through

### Rate of Change

The relationship between two quantities that are changing. Also called slope

### Slope

ex. Vertical Change = Rise
Horizontal Change = Run

### Slope-Intercept Form

ex. y = mx + b
m = Slope b = y-intercept

### Standard Form of a Linear Equation

ex. Ax + By = C, where A, B, and C are real numbers, and A and B are not both zero

### Translation

A shift of a graph horizontally, vertically, or both

### X-Intercept

The x-coordinate of the point where a line crosses the x-axis

### Y-Intercept

The y-coordinate of the point where a line crosses the y-axis

Example: