Definitions
This is what we use in place of a value in math.
variable
2 is to 10
as 3 is to ____
15
The sum of -13 and 71
58
This is the difference between an expression and an equation.
An expression does not have an = sign.
An equation has an = sign.
Combine like terms & Simplify the expression
-3x + 2 + x + 4
-2x+6
The distance between two values is called.....
absolute value
If you paid $6.75 for 3 pounds of apples, then the cost per pound is....
$2.25 per pound
What is -10 - (-100)?
90
Find the value of n when
2n + 57 = 137
n = 40
2(x-1) + x
3x - 2 or
3x + (-2) or
-2 + 3x
Positive and negative whole numbers in math are called....
integers
A ratio that we compare a value to 1 is called....
unit rate
What is the product of -20 and 9?
-180
What is the value of x when
4 (𝑥 + 2) = 32
x = 6
Who is correct?
Bob 3(4x-2) = 12x-2
or
Sally 3(4x-2) = 12x - 6
Sally
This is what we call the relationship of values in a table when there is a c.o.p.
proportional
Miles per hour is an example of this....
rate
What is the quotient of -250 and -50?
5
Find the value of c when
-1/2 c - 9 = 21
c = -60
Combine what is alike
-9x - 5 + 3y -2 + y - x
-10x - 7 + 4y
scale factor
These are the characteristics of a graph when it is proportional.
It forms a straight line that goes through the origin.
The further away from zero a negative value is, the ________________ it is.
smaller
Find the value of x when
15x + 19= 24
x = 1/3
Combine what's alike
6w - 4(w-1) -10
2w - 6