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Hwk. #9            = ;            &n= bsp;            = ;            &n= bsp;            = ;            &n= bsp;   Unit 1    Math 9R

        &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;           &nbs= p;            &= nbsp;      Mrs. Wecksell

1.  Is the relation { (-4,0). (3,0), (= -5,1)} a function?  __________

 

2.  Use the domain {4.1, 4.2, 4.3, 4.4= , 4.5} to find the range:  x + 0.1 &l= t; 4.4  __________________        =  

3. The equation F =3D <= !--[if gte mso 9]> C + 32 converts degrees Celsius C to degrees Fahrenheit F.

     Complete the input-output table for the domain {0, 5, 10, 15, 20}

 

Input

Function=

Output

       &nbs= p;          C =3D 0

F =3D (0) + 32

 

       &nbs= p;         &nbs= p;F =3D 32

       &nbs= p;          C =3D

F =3D

 

       &nbs= p;          F =3D

       &nbs= p;          C =3D

F =3D

 

       &nbs= p;          F =3D

       &nbs= p;          C =3D

F =3D

 

       &nbs= p;          F =3D

       &nbs= p;          C =3D

F =3D

 

       &nbs= p;          F =3D

 

4.  Using the domain {whole numbers}, = find the range for each open sentence.

 

  a)  x – 3 =3D 10  __________   b)  2•x < 4  _____________   c)   x + 5 =3D 2  __________

 

5.  Using the domain {integers}, find = the range for the above three sentences.

 

  a) ____________________ b) _______= ______________  c) ___________________<= /span>

 

6.  If h(x)  =3D  x3 –  x,  find h(2)        &= nbsp;              7.  If f(x) =3D x2  - x0  ,   find f(-10)

 

 

 

8.  The table below shows the prices of several motorcycles and the size of their

     engines. Identif= y the independent and dependent  quantities.  Explain in= a complete

     sentence.

Engine (cc)

249

398

645

996

Price($)

3199

6099

6699

8599

 

 

9.  Identify the independent and depen= dent quantity.  Find the domain and range.

    “Sal and three f= riends plan to bowl one or two games each.  Each game costs $2.50.”

 

 

 

10.  Jacob recorded the height of a sun= flower each week for 5 weeks.

Week

1

2

3

4

5

Height (cm)

15

30

45

60

75

       Which function rule best describes the relationship, if w represents the week and= h represents

       the height?

       a)  h =3D 15w           =      b)  w =3D 15h           &n= bsp;   c)  h =3D w + 15    =         d)  w =3D h + 15

 

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