Linear equations
How to solve?
PEMDAS
what do you do first?
Solve the equation
what do you need to identify?
Domain and range
What would you do with these (1,2) (2,4) (3,6)
GRAPH THEM
In arthiemtic sequences what are you finding?
The difference
How do we solve with multiplication and division and addition and subtraction
Always left to right
Then you need to do what?
Make a chart with x and y
what is a function?
A function is a set of ordered pairs in which the first element in any pair corresponds to exactly one second element.
What is the horizontal number line
The x-axis
What does it need to have to be considered an arthimetic sequence?
A constant number that it increases by.
Solve: x+2=4
X=2
After completing the chart you should have what?
Pairs example (5,7)
For every input there is a what?
An output
What is the vertical line ?
The y- axis
What is your next step?
Graphing the sequence
3x+4=17
X= 13/3
Solve: Y=2x+7
X Y
-2 ?
0 ?
2. ?
2(-2)+7=3 (-2,3)
2(0) +7=7 (0,7)
2(2)+7=11 (2,11)
If you have 2 of the same inputs with different outputs is it a function.
No
If the Y value is 2 and the X value is 4 where will your points be?
A point that is 4 units to the right of the origin and 2 units up
What is the answer
-15,-13,-11,-9
Answer is 2
Solve: 5(2+x)=3(4-x)
X=2/8 then simplify 1/4
Last step is?
Graph your pairs
Is this a function
(1,5) (2,10) (3,15)
yes for every different input you have a different output
what would that last location be?
(4,2)
Solve
3,7,11,15
Answer is 4