All About Lines Flashcards
What is rate of change?
Change in dependent variable over change in independent variable.
Do you use slope or rate of change when graphing X’s and Y’s ?
Slope.
Do you use slope or rate of change when graphing numbers?
Rate of change.
What equation can be used for finding slope on a graph?
Vertical change over horizontal change.
Rise over run.
Slope 0?
Horizontal line.
Positive line?
Pointing towards the right.
Negative line?
Pointing towards the left.
How to find slope from two ordered pairs?
Y1-Y2
—— = Slope
X1-X2
Slope intercept form?
Y=mx+b
What is the y-intercept?
Where the line hits the y-axis.
What is the x-intercept?
Where the line hits the x-axis.
Can m (slope) ever be written as a decimal?
No never.
What is point slope form?
y-y1=m(x-x1)
How to get point slope to slope intercept?
1) Distribute
2) Get y alone
How do you get from point slope to standard form?
1) Distribute
2) Remove fractions
3) Get x’s and y’s on one side and constant on the other
