1. WARM-UP 11/24/09 1. GRAPH USING INTERCEPTS 3X – Y = 5 3X – Y = 5 2. FIND THE SLOPE OF THE LINE IN THE GRAPH 3. FIND THE SLOPE OF THE LINE THRU THE POINTS (-4, 2) & (-4,5) (-4, 2) & (-4,5)

2. NOTES: GRAPHING USING SLOPE & Y-INTERCEPT 11/24/09

3. STEPS WRITE IN SLOPE-INTERCEPT FORM WRITE IN SLOPE-INTERCEPT FORM (Y = MX+B) (Y = MX+B) LABEL SLOPE (M) AND Y-INTERCEPT (B) LABEL SLOPE (M) AND Y-INTERCEPT (B) PLOT Y-INTERCEPT PLOT Y-INTERCEPT USE SLOPE TO FIND FOUR OTHER POINTS (TWO ABOVE & TWO BELOW) & CONNECT THE DOTS USE SLOPE TO FIND FOUR OTHER POINTS (TWO ABOVE & TWO BELOW) & CONNECT THE DOTS

4. EXAMPLE #1 GRAPH GRAPH STEP 1: ALREADY IN Y = MX + B STEP 2: SLOPE Y-INT. STEP 3: PLOT THE Y-INTERCEPT STEP 4: USE SLOPE TO PLOT FOUR OTHER POINTS – TWO ABOVE AND TWO BELOW THE Y- INTERCEPT & CONNECT THE DOTS

5. EXAMPLE #2 GRAPH GRAPH STEP 1: ALREADY IN Y = MX + B STEP 2: SLOPEY-INT STEP 3: PLOT THE Y-INTERCEPT STEP 4: USE SLOPE TO PLOT FOUR OTHER POINTS – TWO ABOVE AND TWO BELOW THE Y- INTERCEPT & CONNECT THE DOTS

6. EXAMPLE #3 GRAPH GRAPH STEP 1: ALREADY IN Y = MX + B STEP 2: Y=-1X + 0 STEP 3: PLOT THE Y-INTERCEPT STEP 4: USE SLOPE TO PLOT FOUR OTHER POINTS – TWO ABOVE AND TWO BELOW THE Y- INTERCEPT & CONNECT THE DOTS

7. EXAMPLE #4 TRY ON YOUR OWN GRAPH GRAPH STEP 1: ALREADY IN Y = MX + B STEP 2: STEP 3: PLOT THE Y-INTERCEPT STEP 4: USE SLOPE TO PLOT FOUR OTHER POINTS – TWO ABOVE AND TWO BELOW THE Y- INTERCEPT & CONNECT THE DOTS

8. EXAMPLE #5 YOU TRY ON YOUR OWN GRAPH Y = -3 GRAPH Y = -3 REMEMBER THIS MEANS Y = 0X - 3 REMEMBER THIS MEANS Y = 0X - 3