Graphing Polynomials

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f(x) = x^2 – 2

x:  -3, -2, -1, 0, 1, 2, 3

1. Substitute all of the values that you have for x into the equation

2. Solve for y.

3. Graph.

 

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Function

Answer this question

What do you believe is the most difficult concept that you have learned in Algebra 1?

Graphing

Factoring

Functions

Absolute Value

FOIL/The Box

GRAPHING S.O.E.

SYSTEM OF EQUATIONS

When the system of equations is already written in y-intercept form, the best method to use is graphing.

Y = 2x + 8             slope: rise 2, run 1           y-intercept: (0,8)

Y =-3x + 3             slope: rise 3, run 1           y-intercept: (0,3)

Solution ( -1, 6)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHECK

Y= 2x + 8                              y = -3x + 3

6 = 2(-1) + 8                        6 = -3(-1) + 3

6= -2 + 8                               6 = 3 + 3

6 = 6                                       6 = 6

Check                                    check