Variables
What does b represent?
y-intercept
what does this symbol mean: >
greater than
Which direction does the Y axis go?
Vertical (Up & down)
What are the 2 pairs of opposite operations?
(+) <--> (-) Plus & minus
(/) <--> (x) Divide & Multiply
What is the mode of a data set?
The most common number
What does m represent?
Slope
When do we flip the inequality sign?
When dividing or multiplying by a negative
What is a y intercept?
where the line of the graph crosses the y-axis
If you subtract 2x from one side, what else do you have to do?
subtract 2x from the other side! The equation has to stay balanced!
What is the formula for IQR (interquartile range)
Q3-Q1
What do the numerator & denominator (top and bottom) of m represent?
Rise over run
Will this equation have a solid or dashed line: [2y+x>6]
What is the first step in graphing a linear equation or inequality?
Plot b (y-intercept) on the y-axis
What is the slope in the following equation: y=-2/3x+6
-2/3
What quartile is the median?
Q2
Which variable do you isolate when re-arranging equations/ inequalities to graph them?
y! (y is always alone in slope-intercept form).
Will the graph of: [Y<1/2x-10] be shaded above or below the boundary?
Below!
Do we shade for equations or inequalities?
inequalities! The graphed answer to an inequality is called a "half-plane" because you shade half the coordinate plane.
What is the first step in putting this equation into y=mx+b format?
[-2y+6x=14]
-6x from both sides
The IQR is what % of the data set?
50%, each quartile is 25% and the IQR contains 2 quartiles (between Q1 & Q3)
What do x & y represent in y=mx+b?
x= Independent variable
y= dependent variable
Do we do dotted or solid lines for INCLUSIVE inequalities
Solid
if m=(-3) How many spaces do you move on the graph & in which direction?
3 down & 1 right
What is slope-intercept form?
y=mx+b
Where do we find "Linreg" (linear regression) on our calculators?
Stat--> CALC--> 4:LinReg