1. HW 13: red text p. 415 #s 1 – 12. y = x 2. y = -x slope = 1 slope = -1
y-intercept = 0
2. y = -x
slope = -1
y-intercept = 0
Not a great question.
y = 6 – x
slope = -1
y-intercept = 6
y = x + 9
slope = 1
y-intercept = 9
Point of intersection is (3, 3)
Point of intersection is (-9/2, 9/2)

2. HW 13: red text p. 415 #s 1 – 12. 3. y = -x + 2 4. y = 3x + 1
slope = -1
y-intercept = 2
4. y = 3x + 1
slope = 3
y-intercept = 1
y = 2x + 5
slope = 2
y-intercept = 5
y = 3x – 8
slope = 3
y-intercept = -8
Point of intersection is (-1, 3)
No point of intersection

3. HW 13: red text p. 415 #s 1 – 12. 5. y = x – 6 6. y = -4x – 3
slope = 1
y-intercept = -6
6. y = -4x – 3
slope = -4
y-intercept = -3
y = -2x
slope = -2
y-intercept = 0
y = 5x + 6
slope = 5
y-intercept = 6
Point of intersection is (2, -4)
Point of intersection (-1, 1)

4. HW 13: red text p. 415 #s 1 – 12. 7) No solution
8) Point of intersection (2, 3)
9) Infinitely many points
10) No solution
11) Point of intersection (2, -1)
12) Infinitely many points