Functions and Linear Functions

What is the formula for finding slope in a function

• x¹+y²

• y²-y¹/x²-x¹

• y¹-y²

• x²+y¹

How do you find your y-intercept in a function?

• Add all the y-values together

• Find the value of y when x=0

• Find the value of x when y=0

• Add all the x-values together

Is this graph a function or not a function? 

• Function

• Not a Function

Which graph is linear?

• Graph A

• Graph B

• Graph C

• Graph D

What equation does the table represent?

• y=x+1

• y=x-1

• y=2x+1

• y=2x-1

Does this mapping diagram represent a function?

• No, because there are repeating input values

• Yes, because there are no repeating input values

Is function represented by the table linear or nonlinear?

• linear

• nonlinear

Does the table represent a function?

• Yes, there  is a repeated x-value. 

• No, there aren't any repeated y-values. 

• Yes, there are repeated y-values. 

• No, there is a repeated x-value. 

Is this function linear or nonlinear?

• Linear

• Nonlinear

What is the y-intercept of the equation:
 y = 2x - 3 

• -2

• 2

• 3

• -3