Desmos
To do anything on Desmos STAAR, this is where you start.
What is the + sign?
The rate of change.
What is slope?
starting point
What is the y-intercept?
The change in y/the change in x
What is rise/run?
m = 2
b = 3
y = mx + b
What is y = 2x + 3
The number of options in the Desmos STAAR menu.
What is 3?
vertical change/horizontal change
What is rise/run?
initial value
What is the y-intercept?
vertical change down 5
horizontal change right 3
What is -5/3?
m = -4
b = 7
y = mx + b
What is y = -4x +7?
You type this instead of an equal sign.
What is a tilde (~)?
Given (2,5) and (4,9).
What is 2?
Given (0,5) and (2, 1)
What is 5?
Vertical change up 2
Horizontal change right 5
What is 2/5?
m = 0
b = 9
y = mx + b
What is y = 0x + 9? or What is y = 9?
When you want the Desmos STAAR Graphing Calculator to read your data from a table, you have to ensure you use these.
What are x1 and y1?
Given (0,4) and (3,13)
What is 3?
Given (1,-3) (4, 5)
no vertical change
horizontal change 1 right
What is 0/1?
m = 0
y-intercept is -9
y=mx+b
What is y = ox -9 or y = -9?
The formula for linear regression.
What is y1~mx1+b?
Given y = 15x +4
What is 15?
Given y = x - 7
What is -7?
Vertical change up 3
no horizontal change
What is 3/0?
m = undefined
no y -intercept
x-intercept = 2
What is x=2?