Vocabulary
What is the definition of Variable?
a variable is a letter or symbol used to represent a value that does not change.
Solve m-n=5 for m?
m=5+n
Solve 10=6-2x.
x=-2
Solve each equation.
x-10=4
x=14
Write x + 3 in words
give 2 ways
the sum of x and 3
x increased by 3
What is the definition of Constant?
a constant is a value that does not change.
2a+2b=c for b.
b=c-1a
Solve for x 9=6- (x+2)
x=-5
Solve each equation.
n-3.2=5.6
n=8.8
write m-7 in words
give 2 ways
the difference of m and 7
7 less than m
What is the definition of a Numerical Expression?
a numerical expression may only contain contents and or operations.
m-4n=8 for m.
m=4n+8
Solve 6x+3-8x=13
x=-5
Solve each equation
-6=k-6
k=0
2 * y
give 2 ways
2 times y
the product of 2 and y
What is the definition of a Literal Equation?
A literal equation is an equation where variables represent known values.
Solve 4y+3x=5 for x
x=-4/3y + 5/3
Solve for c 63.40=3.95c+19.95
c=4.37
Solve each equation.
2/5=m-1/5
(these are fractions)
m=3/5
k/5
give 2 ways
k divided by 5
the quotient of k and 5
What is an Indirect Measurement?
An Indirect Measurement is a method of using proportions to find an unknown length or distance in similar figures.
In 2009, Olivia won her school grade race with a time of 45 minutes. The race was about 4 miles. What was her average speed? Use the formula d=rt.
WRITE YOUR ANSWER IN A FULL SENTENCE!
Olivia's average speed was about 11.25km.
Which equation below shows a correct first step for solving 3x=-12
A) 3x+3=-12+3
B) 3x-3=-12-3
C) 3(3x)=3(-12)
D) 3x/3=-12/3
D
Solve each equation.
x+6+(-6)=2+(-6)
x=24
3(h)
give 2 ways
3 times y
the product of 3 and h