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)