Question

1. y = x + 6
y = 2x (1 point)
(6, 12)
(–12, –6)
(–6, –12)
(2, 4)

2. 3x + 2y = 7
–3x + 11 = y (1 point)
(6, –3)
(6, –7)
(-4,19/2)
(5, –4)

3. 2x – y = –7
4x – y = –4 (1 point)
(–1.5, 4)
(1.5, 10)
(4, –1.5)
(–1.5, –2)

4. –4y + 4 = x
2x + 8y = 8 (1 point)
one solution
two solutions
infinitely many solutions
no solution

5. 6x + 2 = y
3y – 18x = 12 (1 point)
one solution
two solutions
infinitely many solutions
no solution

Answer 1

1 (6,12)

Answer 2

2) (5, -4)
3x + 2y = 7
y = 7/2 - 3x/2
y = 7/2 - (3(5)/2)
y = 7/2 -15/2
y = -8/2
y = -4

and

(6, -7)
–3x + 11 = y
y = 11-3x
y = 11 - 3(6)
y = 11 - 18
y = -7