Algebra terms and expressions
Substitution
BOMDAS
One Step Equations
Travel Graphs
100
What is a variable?
A symbol (usually a letter) that represents a value.
100
If y = 3 then solve
y + 8
3 + 8 = 11
100
What does each letter in BOMDAS mean?
B = brackets
O = to the power or or indices
M = multiply
D = divide
A = add
S= Subtract
100
x - 3=5
x=8
100
Draw a graph with a rest/stationary period.
200
Write an expression for this phrase:
nine increased by a number x
9 + x
200
When y = 5, evaluate the expression: 2y
2 x 5 = 10
200
5+3 x 2
11
200
x+14=18
x=4
200
In the following graph, how far was the shop away from home?
8km
300
Write an expression for this phrase:
the product of 9 and a number t
9t
300
Evaluate the following expression when x = 5 and y = 4.
y + x
4 + 5 = 9
300
5+42
21
300
12x=24
x=2
300
In the following graph, how long was the car stopped for?
6 hours
400
Write a phrase for the following expression:
14-p
fourteen decreased by a number p
400
Evaluate the following expression when x = 7 and y = 3:
xy
7 x 3 = 21
400
22+2(10-8)
26
400
81/x = 9
x=9
400
Was the trip to or from the shop faster? How do you know?
The trip to the shops was faster as the slope was steeper.
500
Write a phrase for the following expression:
8g + 7
The product of 8 and g is added to 7.
500
If y =3 and x=4 evaluate the following:
5x + 7 - y =
5 x 4 + 7 - 4
=20 + 7 - 4
= 27 - 4
= 23
500
(42+5)÷√9
21.09
500
s+7−4=13
s=10
500
On a graph how do you indicate leaving 'home' and returning 'home'?
leaving = graph goes up
returning = graph goes down