Is it linear?

Is it linear?

How do you know whether a graph or table is linear?

• Its graph is a line

• The rate of change is constant 

Multiple Choice

Is it linear?

• yes

• no

Multiple Choice

Is it linear?

• yes

• no

Is it linear?

• look at the rate of change - AKA slope

• slope = change in y over the change in x

• +4/+1

Multiple Choice

Is it linear?

• yes

• no

Multiple Choice

Is it linear?

• yes

• no

An equation is linear if it can be written in:

• Slope-Intercept Form: y = mx + b

• Standard Form: Ax + By = C

• andmust also A, B, C are integers

  A is positive

  Both A and B can’t be zero

Multiple Choice

Is it linear?

• yes

• no

Multiple Choice

Is it linear?

• yes

• no

Multiple Choice

Is it linear?

• yes

• no