1.   What is the final answer to this Think of a Number trick?
Think of a number.
Subtract 6.
Multiply by –3.
Subtract 18.
    A. the answer is 1.5 times the number you started with
    B. the answer is 3 times the number you started with
    C. the answer is –1.5 times the number you started with
    D. the answer is –3 times the number you started with
    Hint

  2.   What is the final answer to this Think of a Number trick?
Think of a number.
Multiply by 4.
Subtract 8.
Divide by 2.
Add 4.
    A. the answer is 2 less than the number you started with
    B. the answer is 2 more than the number you started with
    C. the answer is –2 times the number you started with
    D. the answer is 2 times the number you started with
    Hint

  3.   Simplify the equation.y = –2(x – 7) – (9 + 5x)
    A. y = 7x – 5 B. y = –16x + 3
    C. y = –7x + 5 D. y = 3x – 16
    Hint

  4.   Find the linear equation.
    A. y = x + x2 – 7x + 4.9
    B. y = 5.2(x – 6) – 2(4 – 3x)
    C. y = 10(x – 8) + 3x2
    D. y = 7x (x– 1) + 4(9.6 –x)
    Hint

  5.   Which equation is not linear?
    A.
    B. y = –2(–8 – x) – 5x (x – 1)
    C. –3y + x – 16 + 2.9x= 0
    D. 5x – 2y = 4.1
    Hint



Glencoe
The McGraw-Hill Companies