1.1/vocab
1.2
1.3
1.4
1.5
100
quatnties whos values do not change
what are constants?
100
classify a variable
Your school is sponsoring a charity race. Which subset of real numbers best describes the number of people, p, who participate in the race?
A. natural numbers
B. integers
C. rational numbers
D. irrational numbers
What is A. natural numbers?
100
which alebraic expression models word phase seven fewer than a number t?
A) t+7
B) -7t
C) t-7
D) 7-t
what is C) t-7?
100
solve this one step equation.
x+ 4 =-12
with a check
what is x=-16, -12=-12
100
write an inequality from this sentence
5 fewer than a number is at least 12
what is x-5 (greater than or equal to sign) 12
200
What is the pattern? What would the next figure in the pattern look like?
what is a heptagon?
-the pattern went 3,4,5,6...
-next would be 7
200
what is the graph of -5/2, (sqaure root 2) and 2.6 repeating.
-graph numbers on the number line
what is <----*---------*--*---->
-5/2 sqr 2 2.6 repeating
200
~evaluate algebraic expressions~
what is the value of the expression for the given variables?
7(a+4) +3b-8 for a= -4 and b= 5
what is 7?
200
solve this one step equation, with a check
-27 + 6y = 3(y-3)
what is y=6, 9=9?
200
write an inequality from this sentence
"the quotient of a number and 3 is no more than 15"
x/3 (greater than or equal to sign) 15
300
a symbol- letter that represents one or more numbers
what is a variable?
300
order real numbers
-2/3 _____ -1/3
what is -2/3 __<__ -1/3?
300
which algebraic expression models the word phrase two times the sum of a and b?
A) a+b
B) 2(a+b)
C) 2a+b
D) a + 2b
what is B) 2(a+b) ?
300
an equation that uses at least 2 different letters as variables
what is a literal equation?
300
when you multiply or divide by negative on both sides you must flip the inequality symbol
what is solving inequalities?
400
mathematical phrase only containing numbers and operation symbols
what is a numerical expression?
400
(3 x 4) x 5 = (4 x 3) x 5
identify properties of real numbers
what is the commutative property of multiplication?
400
what is the value of the expression for x=6 and y= -3
2(x2-y2) / 3
what is 18?
400
this equaiton always, sometimes, or never true
7x + 6 -4x=12 + 3x - 8
what is 6=4, never; no solution?
400
this equation is always, sometimes, or never true
4(2x-3) < 8(x+1)
what is -12 < 8 ; always?
500
methematical phrase contains 1 or more variables
what is an algebraic expression?
500
a + [3+(-a)] = 3
use properties of real numbers to show that
a + [3+(-a)] = 3. Justify each step of your solution.
what is 3 = 3, communitive property of addition, associative property of addition, inverse property of addition and identify property addition?
500
simplify this algebraic expression
7x2+3y2+2y2-4x2
what is 3x2+5y2?
500
this equation is always, sometimes or never true
2x + 3(x-4)=2(2x-6)+x
what is 0=0; always, infinite many solutions?
500
this equation is always, sometimes, or never true
-6(2x-10) + 12x(greater than or equal to sign) 180
what is 60 (greater then or equal to sign) 180; never?