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Algebra I EOC Vocab

Vocabulary STAAR Practice 2 of 3

Dependent Variable the output variable (y) whose value in a function is determined by the input variable (x)
Independent Variable the input variable (x) whose value in a function affects the output variable (y)
Negative Slope if the line goes down and to the right on a graph
Zero Slope (y = #) is a horizontal line
Slope A measure of steepness of a straight line defined as rise over run
Undefined Slope (x = #) is a vertical line
y-intercept where the line or parabola crosses the y-axis
Δx indicates change in the domain
Δy indicates change in the vertical axis
Line of Best Fit a line drawn through or near data points that most accurately represents a set of data
Linear Function Data sets that have a constant rate of change and form a straight line, have x as the input variable where x is raised only to the first power
Point-Slope Form equations written as y-y1=m(x-x1)
Slope-Intercept Form y = mx + b, where m= slope b = y intercept and (x , y) shows the coordinate of a point on the line
Standard Form ax + by = c where a, b and c are integers
Infinitely Many Solutions linear systems of equations that have an infinite number of solutions are the same line
No solution when a system of equations do not have an intersection
System equations that you solve at the same time
Created by: SuzyMahoney