Math
If you wish to figure out the x intercept, what do you plug in for y?
0
Solve the slope using the coordinates: (5, -10) (-15, 20)
30/-20
Solve the slope using coordinates: (3, 9) (10, 4)
5/-7
What is standard form?
Ax + By = c
Which way does a negative slope go?
Down and right
How do you find slope when given a graph?
Go up and down from the y-intercept to the nearest point.
Which way does a zero slope go?
Horizontal.
Which way does a positive slope go?
Up and to the right
Which way does an undefined slope go?
Vertical.
When given coordinates, how do you find slope?
Y1-Y2/X1-X2 (any y can come first, same with x)
Variable for y-intercept
b
Slope is written as a __________ in _________ __________
fraction, simplest form
Variable for slope
m
Find x-intercept given an equation
to find the x-intercept just plug in y=0
Find y-intercept given an equation
to find the y-intercept just plug in x=0
What is slope intercept form?
y = mx + b
Point-Slope Formula
y-y1=m(x-x1)
3x + 5y = 15
y= -3/5x + 3
What is slope?
Rise over run (rise/run)