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Algebra 1 Vocabulary

All terms and know-how for Algebra 1!

TermDefinition
Coefficient The number a variable is being multiplied by.
Arithmetic A sequence that has a common difference and is linear.
Geometric A sequence that has a common ratio and is exponential.
Slope The rate of change for a linear function. Rise/run.
Slope Formula y2 - y1/x2 - x1
Slope-Intercept Form y = mx + b
Y-Intercept Where the line intersects the y-axis.
X-Intercept Where the line intersects the x-axis.
Translation A change in the y-intercept from one function to another. (slide)
Rotation A change in the slope from one function to another. (turn)
Greater Than >
Less Than <
Less Than or Equal to Closed circle, shading to the left.
Greater Than or Equal to Closed circle, shading to the right.
Absolute Value The distance from zero on a number line.
Natural Numbers The counting numbers. 1,2,3...
Whole Numbers The counting numbers, and 0. 0,1,2,3...
Integers Whole numbers and their opposites. ...-3,-2,-1,0,1,2,3...
Rational Numbers Any number that can be written as a fraction, where the denominator does not equal 0. 3/4, 0.45, 0.33333...
Irrational Numbers Any number that cannot be written as a fraction. The decimal does not repeat or terminate. pi, 0.734564827... , the square root of an imperfect square.
Standard Form Ax + By = C
Function A special relation where each input value has exactly one output value.
Relation A set of ordered pairs.
Independent Variable The x-values of a function. They do not rely on the y-values.
Dependent Variable The y-values of a function. They rely on the x-values.
Input The x-values of a function that determine the y-values.
Output The y-values of a function that are determined by the x-values.
Order of Operations The way of simplifying expressions correctly. PEMDAS
Multiplication Properties of Exponents Keep the base and add the exponents.
Division Properties of Exponents Keep the base and subtract the exponents.
Power Properties of Exponents Keep the base and multiply the exponents.
Like Terms Terms with the same variable and exponent.
Parallel Lines Lines with the same slope.
Perpendicular Lines Lines with the opposite/reciprocal slope.
Polynomial A group of terms
Constant A number that does not change. 2y + 6 ... 6 is this.
Proportional Relationship A special relationship where a linear function crosses at the origin.
Quadrant I Both x and y are positive values in this quadrant.
Quadrant II x is negative and y is positive in this quadrant.
Quadrant III Both x and y are negative in this quadrant.
Quadrant IV x is positive and y is negative in this quadrant.
Origin The point (0,0) is referred to as this.
Pythagorean Theorem The distance between two points can be found using this. a squared + b squared = c squared
Sum The answser to an addition problem.
Difference The answer to a subtraction problem.
Product The answer to a multiplication problem.
Quotient The answer to a division problem.
x-axis The horizontal axis.
y-axis The vertical axis.
Prime Number A number greater than 1 with only two factors, itself and 1.
Composite Number greater
Triangle A polygon with 3 sides.
Quadrilateral A polygon with 4 sides.
Pentagon A polygon with 5 sides.
Hexagon A polygon with 6 sides.
Heptagon A polygon with 7 sides.
Octagon A polygon with 8 sides.
Nonagon A polygon with 9 sides.
Decagon A polygon with 10 sides.
Diameter The distance from one outer part of a circle to another, while passing through the center.
Radius The distance from the outside to the middle of a circle.
Circumference The distance around a circle.
Area How many square units are inside of a polygon.
Perimeter The distance around a polygon.
Nearest Tenth When 0.878 is rounded to 0.9; it is rounded to this place value.
Nearest Hundredth When 0.7684 is rounded to 0.77; it is rounded to this place value.
Nearest Thousandth When 0.7684 is rounded to 0.768; it is rounded to this place value.
Nearest Whole When 4.67 is rounded to 5; it is rounded to this place value.
Nearest Ten When 18 is rounded to 20; it is rounded to this place value.
Nearest Hundred When 564 is rounded to 600; it is rounded to this place value.
Created by: ccjohnson34