The given equation is y = 3x - 1.
Test the given solutions.
A. (4,1)
y = 1
3x-1 = 3*4 - 1 = 11
Incorrect
B. (2,5)
y = 5
3x-1 = 3*2 - 1 = 5
Correct
C. (4,3)
y = 3
3x-1 = 3*4 - 1 =11
Incorrect
D. (0, -3)
y = 0
3x-1 = 3*0 - 1 = -1
Incorrect
Answer: B. (2,5)
1. x- 6 = -18
Add 6 to each side.
Answer: x = -12
2. 4x + 3 = 47
Subtract 3 from each side.
4x = 44
Divide each side by 4.
Answer: x = 11
3. 1/3x = 12
Multiply each side by 3x.
1 = 36x
Divide each side by 36
Answer: x = 1/36
4. 3x + 3 = 21
Subtract 3 from each side.
3x = 18
Divide each side by 3.
Answer: x = 6
5. 3/2x - 4 = 16
Add 4 to each side.
3/2x = 20
Multiply each side by 2x.
3 = 40x
Divide each side by 40.
Answer x = 3/40
