Review (3,3) (4,-2) (6,5) (9,1).

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Presentation transcript:

Review (3,3) (4,-2) (6,5) (9,1)

Review 3, 6, 9, 12: Find the 20th term

Function/slope-intercept form

Information Equation in 2 variables: equation with 2 variables. Ex: 2x – y = 6 Solution: ordered pair makes equation true. Ex: (2, 3) is a solution to 2x – 3y = -5

Check for solutions Tell if pair is a solution to 3x + 2y = -8 (4, -12) Tell if pair is a solution to 3x + 2y = -8 (10, -19)

Check for solutions Tell if pairs are solutions to 2x – y = 5 (1, -3) (4, 7 ) Tell if pairs are solutions to 3x + 2y = -8 (0, 4) (-2, -1)

Information Slope intercept form: y = mx + b M = slope B = y-intercept Identify the slope and y-intercept Y = -2/3x + 3 Y = 2x – 4 Y = 4x + 3

Function/slope-intercept form Function form: solve for y. Ex: 3x + y = 7 2x – 3y = 3 3x – 2y = 6

Function/slope-int Form Y – x = 1 3x – 5y = -1 2x + 3y = 12

Change to slope intercept form 3x – 2y = 12 -2x + 4y = 16

Change to slope intercept form X + y = 3 -2x – 3y = 24 5x – 7y = 28 5x + y = 3