Unit 10 Math Word/Vocabulary Example/Picture Explain Algebraic expression Maria is 2 inches taller than Joe. M = Maria’s height M-2 = Joe’s height An expression that contains a variable. A graph in which data points are connected by line segments. Line Graph Pan Balance A device used to weigh objects or compare their weights. Predict To say what will happen in the future based on experimental data or calculations. Rate A comparison by division of two quantities with different units. Traveling 100 miles in 2 hours is an average rate of 100mi 2hr Or 50 miles per hour. Unit 10 Math Whole Numbers The counting numbers and 0. 0, 1, 2, 3, 4, 5, 6 …….25….77….1,258….122,346,896… Single Operation 4+7=? 4*7=? A math problem where only one operation is being used 7/4=? Equation 5 + 10 = 15 P = 21 + 2w Expression 2+3 5*8 5/r+5 9x - 3 A number sentence that contains an equal sign. A mathematical phrase made up of numbers, variables, operation symbols, and/or grouping symbols. An expression DOES NOT contain relation symbols! Inequality 9 < 12 12 > 4 May also use ≤, ≥, ≠, etc. A number sentence with a relation symbol other than =. Unit 10 Math Variable 5+n=9 n=4 x + 2 < 10 x = any number less than 8 Pi (16th letter of the Greek Alphabet) Or 3.1415927 (3.14) geyser A letter or other symbol that represents a number. The ratio of the circumference of a circle to its diameter. Also, the ratio of the area of a circle to the square of its radius. A natural hot spring from which steam and hot water shoot into the air after being heated below the surface by masses of hot rock