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zero positive Slope negative undefined Substitue the ordered pairs for x and y and then check to see if the equation is balanced. y = x + 4 for (5, 2) would be 2 = 5 + 4; 2 ≠ 9. It does not work. (3, 7) The point represented by which ordered pair is NOT on the graph of y = x + 4? (2, 6) (0, 4) (2, 2) -2 What is the output value of y for y = 3x + 4 if the input value x is -2? 10 1 7 y = mx + b slope y intercept y = 4x Which function describes the sequence 4, 6, 8, 10, 12...? y = x + 2 y 4 6 8 10 12 14 x 0 1 2 3 4 5 6 y intercept y = 3x + 1 y = 2x + 2 Find the y intercept and the slope. Which function describes the sequence 4, 8, 12, 16...? y = x + 2 y = 4x y = 3x + 1 y = 2x + 2 y = 4x Which function describes the sequence 3, 4, 5, 6...? y = x + 2 y = 3x + 1 y = 2x + 2 Which function describes the sequence 4, 7, 10, 13...? y = 4x y = x + 2 y = 2x + 2 y = 3x + 1 14 What is the next term in the sequence 21, 20, 18, 15...? 11 12 13 y = 3x - 1 Which linear function matches these ordered pairs? (-1, -8) ( 0, -3) ( 1, 2) y = x - 3 Substitute the ordered pairs back in to see which equation will work for all three. y = 5x -3 y = 2x + 3 y = 4x + 3 5x = y A direct variation is y = kx. Which of the following is a direct variation? y = x + 5 xy = 8 True A direction varation always goes through (0, 0). False True Linear function make a line. False x 4 y In the equation y = 4x the constant of variation (slope) is... 12 1 In the equation y = 4x when x = -3, y = ? Remember it is a proportion. Substitute -3 in for x and solve. -12 4/3 Parallel lines have thesame slope. y = x + 6 y = x - 7 3 3 Perpendicular lines haveopposite sign,reciprocal slopes. y = x + 6y = x + 5 -⅓ 3 Drag and drop your answers. What is the slope of all lines parallel to the above? What is the slope of all lines perpendicular to the above? y = ¾x + 5 -4/3 ? ¾ ? What is the slope of alllines parallel to it? What is the slope of all lines perpendicular to it? Put any needed negative signs with the top number. y = 4x + 7 What is the slope of alllines parallel to it? What is the slope of all lines perpendicular to it? Put any needed negative signs with the top number. y = ⅜x + 7 |