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Math Review
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#math #inequality #9thgrade #twovariables #equations
Flashcards
30 cards
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Questions
30
Answers
1
What are the 3 properties we discussed n class?
precision, significant figures, and equations
elimination, substitution, and graphing
associative, distributive, and commutative
addition, multiplication, and subtraction
2
which equation represents the graph?
y = 2x +3
y = x - 3
y = x + 3
y = 1/2x +3
3
2x - 1 > 7
x > 3
x < 4
x > 4
x < 3
4
x^2 - y = 38
(8,42)
(9,45)
(7,11)
(9,32)
5
Which equation represents this graph. (Think about slope.)
y = -4x - 3
y=x
y = -x
y=3x+5
6
What symbol represents an included value when you graph an inequality?
A closed dot
an arrow
An open dot
n/a
7
4b + 3b ⪰ -126
b⪯ 18
b < -18
b ⪰ 18
b ⪰ -18
8
3(x-7) = (x-7)3 --> which property is demonstrated
distributive
none
associative
commutative
9
find the solution to -4x + 3y = 12 4x + 6y =24
y = 3
y=4
x=2
y =5
10
what is y = mx+b
a solution
a variable
an inequality
a linear equation
11
y = 5x + 7 solve for x = -3
-8
7
-9
8
12
choose the correct number of significant figures are 500
3
1
2
none
13
Which graph represents the inequality
x > 4
x
x < 4
x = 4
14
3x + 5y = 15 à Find the correct solution using substitution
(7,11)
(0,3)
(3,0)
(4,4)
15
-3a - 7 + 6a < -55
a > -16
a < -16
a < 16
a > 16
16
solve for x = -3. y = -2x
y = 9
y = 5
y = 6
y = - 6
17
x + 2 > 12
x > 10
x < 9
x < 10
x > 9
18
Solve using the elimination method
x = 4
y = 6
x = 6
y = 4
19
How man solutions can a two variable equation have?
none
two
one
many
20
Solve using elimination
x = 1
x = 4
x = -1
x = 3
21
which solution represents the graph
x > 21
x < 21
x > -21
x ⪰ -21
22
what does the following symbol represent ⪰
less than or equal to
less than
greater than or equal to
greater than
23
the solution to a two variable equation is written as__________
a ordered pair
a variable
a constant
a term
24
Which ordered pair is the correct solution for the following equation 3x + 5y = 15
(0,5)
(7,5)
(0,3)
(2,9)
25
which solution represents the graph
x < -4
x < 4
x ⪯ 4
x ⪯ -4
26
solve for x = -10. y = -x +5
y = -15
y = -5
y = 15
y = 5
27
solve using elimination
x = 2
x= 4
x = 8
x = 3
28
What are the three process we can use to solve two variable equations?
elimination, substitution, and tables/graphing
Precision, multiplication, and division
associative, communitive, and distributive
dimensional analysis
29
1.In order to find the solution to an equation, you must _________ x and y into the equation.
substitute
add
cross out
divide
30
What happens when you divide an inequality by a negative?
nothing
it becomes positive
you cancel like terms
the sign flips
