Algebra Vocabulary Chapter 3 Flashcards
Names for a Graph
There are 3
Coordinate Plane
Cartesian Plane
Coordinate Grid
Coordinate Pair
Value for x and value for y
Tells us a fixed location or point on a graph
x comes first in parentheses
Orgin
Where the axis meet
(0, 0)
Interval
Space between two numbers on a graph
Must always be the same
Quadrants
There are 4 of these
Identified with roman numerals
I, II, III, IV
X-axis
Horizontal line
Y value is always 0
Y-axis
Vertical line
X value is always 0
Are axis part of quadrants?
No
X-intercept
Where a line hits the x-axis
What is x when y = 0?
Y-intercept
Where a line hits the y-axis
What is y when x = 0?
Linear Equation
Straight line
Hits each axis no more than once (Unless it is horizontal/vertical)
Has 1 or 2 variables
What does Standard Form look like?
Ax + By = C
Question to Find Slope
How much does y increase/decrease when x increases by 1?
2 Ideas for Finding Slope
Rate of Change
Rise over Run
Can constant change be multiplication or division?
No. It can only be addition or subtraction.