9.2 Representing Linear Functions Continued

y X x - intercept y - intercept Definitions. Instruct student to add to notebook. y - intercept

Graphing using Intercepts Let x=0 and determine the y-intercept. Let y=0 and determine the x-intercept Plot both points. Connect them with a line. More for notebook

Graph y=x+4 using intercepts Find x-intercept 0=x+4 Find y-intercept Y=0+4 -4__-4 Y=4 -4= x Teach and demonstrate the concept.

Graph 4x + 3y = 12 using intercepts Find x-intercept 4x + 3(0) = 12 Find y-intercept 4(0) + 3y = 12 4x = 12 3y = 12 x = 3 y = 4 Teach and demonstrate the concept.

Graph y = -2x using intercepts X- int Y- int Y=0 X=0 If your x and y intercept is (0,0) you need more ordered pairs to graph. Use a table to find the extra ordered pairs

Horizontal and Vertical Lines The graph of y= # is HORIZONTAL The graph x =# is VERTICAL

Graph y = 4 using 3-points x y 4 3 6

Graph x = 6 x y 6 3 - 4

Assignment Page 394 (27-36) all