Lines and Stuff Flashcards
(24 cards)
What property is this?: 3x + 4 - 4 = 12 - 4
Subtraction property
What property is this?: 3 + 4 = 7 4 + 3 = 7
Commutative
What is the grouping property?
Associative
What property creates a ghost 1?
Multiplicative Inverse
What is it called when you divide on both sides of an equation?
Division Property
What is an inequality?
One side has a greater value than the other.
What is an equation?
Expression with an equals sign. (Balanced scale)
What is an algebraic expression?
A non-equation with math operations.
What is wrong with PEMDAS?
It doesn’t work a lot of the time. Do MD left to right and do AS left to right.
What is the set of whole number?
{ 0, 1, 2, ….}
What is the difference between natural numbers and whole numbers?
Zero (whole numbers has it)
What are real numbers?
Any number that can be written as a fraction.
What is answer to life the universe and everything?
42
What is 7 x 7
49
What is an integer?
{… -2, -1, 0, 1, 2 … }
What is a coefficient?
The number in front of a variable. (That includes).
What does “like terms” mean?
Same exact variable parts (including exponents)
What is a constant term?
Just a number. (no letter).
What is a reciprocal?
When you turn a fraction upside down.
What is the percent equation?
Amount = Percent (decimal form) x Number
What is a cross product?
A strategy used to solve proportions. Means times the extremes.
What is a ratio?
Two numbers compared by division. (usually a fraction)
What is a proportion?
Two ratios that are equal to each other.
What is a coordinate plane? And who invented it?
It’s a two dimensional x/y chart invented by Renee Descartes.
