1. Lake Zurich High School
Graphing Lines
slope & y-intercept
&
x- & y- intercepts
Jeffrey Bivin
Lake Zurich High School
Last Updated: September 6, 2007

2. Graphing Lines
slope and y-intercept
Jeff Bivin -- LZHS

3. y = 2x + 1 y = 2x + 1 1 2 y-intercept b = 1 slope m = 2 Run Rise
Jeff Bivin -- LZHS

4. y = -3x + 2 y = -3x + 2 1 -3 y-intercept b = 2 slope m = -3 Run Rise
Jeff Bivin -- LZHS

5. Run 3
y-intercept
b = -1
Rise 2
slope
Jeff Bivin -- LZHS

6. Run 2
y-intercept
Rise
b = 3 -1
slope
Jeff Bivin -- LZHS

7. Graphing Lines
x- and y- intercepts
Jeff Bivin -- LZHS

8. 2x + 3y = 5 find the x value when y = 0 find the y value when x = 0
x-intercept
2x + 3(0) = 5
2x + 0 = 5
2x = 5
find the y value
when x = 0
y-intercept
2(0) + 3y = 5
0 + 3y = 5
3y = 5
Jeff Bivin -- LZHS

9. 4x - y = 6 find the x value when y = 0 find the y value when x = 0
x-intercept
4x - (0) = 6
4x - 0 = 6
4x = 6
find the y value
when x = 0
y-intercept
4(0) - y = 6
0 - y = 6
-y = 6
Jeff Bivin -- LZHS

10. 4x + 2y = 3 find the x value when y = 0 find the y value when x = 0
x-intercept
4x + 2(0) = 3
4x + 0 = 3
4x = 3
find the y value
when x = 0
y-intercept
4(0) + 2y = 3
0 + 2y = 3
2y = 3
Jeff Bivin -- LZHS

11. 3x - 2y = 7 find the x value when y = 0 find the y value when x = 0
x-intercept
3x - 2(0) = 7
3x - 0 = 7
3x = 7
find the y value
when x = 0
y-intercept
3(0) - 2y = 7
0 - 2y = 7
-2y = 7
Jeff Bivin -- LZHS