1. m b
y = 2x + 3
y = 2x + 9

2. m b
y = 5x + 4
y = 5x + 1

3. m b
y = 2x + 5
y = 2x – 6

4. m b
y = -4x + 6
y = -4x + 1

5. m b
y = -9x – 3
y = -9x + 5

6. m b
y = 1/2x + 8
y = 1/2x + 2

7. m b
y = 5/4x – 1
y = 5/4x – 7

8. m b
y = -1/7x – 4
y = -1/7x – 5

9. m b
y = -1x + 9
y = -1x – 1

10. m b
y = -4x + 6
y = -4x + 0

11. m b
Parallel lines
have the same
slopes (m) but
different y-
intercepts (b)