ch.1 algebra 1

Question 1

constant

Answer 1

unchanged

e.g. 5y + 2 (2 = the constant)

Question 2

variable

Answer 2

changed

e.g. 5y + 2 (y = the variable)

Question 3

coefficient

Answer 3

number before variable

e.g. 5y + 2 (5 = coefficient)

Question 4

index

Answer 4

power

Question 5

increase

Answer 5

add

Question 6

decrease

Answer 6

subtract

Question 7

like terms

Answer 7

look alike

e.g. 4x + 3x + 2x (there like terms because they all have x)

Question 8

unlike terms

Answer 8

don’t look alike

e.g. 3a + 2b (they are unlike terms because they have different variables)

Question 9

collecting like terms

Answer 9

e.g. 3a + 2b - 2a + 3b would go to:

3a - 2a + 2b + 3b

Question 10

bidmas

Answer 10

B - brackets
I - indeces (power of)
D - division
M - multiplication
A - addition
S - subtraction

Question 11

multiplying and dividing integers

Answer 11

+ x + = + (p x p = p)
+ x – = – (p x n = n)
– x + = – (n x p = n)
– x – = + (n x n = p)

Question 12

hcf

Answer 12

highest common factor
e.g. 4x + 8
hcf = 4 —> 4(x + 2)