3. What is the range of the function: {(1, 3); (3, 5); (5, 7); (7, 9)}?
(Points : 4)
{1, 3, 5, 7}
{1, 3, 5, 7, 9}
{1, 9}
{3, 5, 7, 9}


Question 4.4. If f(x) varies directly with x and f(x) = 4 when x = 12, then what is the value of f(x) when x = 60?
(Points : 4)
5
20
180
300

What is the turning point of the graph of f(x) = |4x| + 2 ?
(Points : 4)
(0, 0)
(–4, 2)
–(2, 0)
(0, 2)



Answer :

1a. Range of the Function: {3, 5, 7, 9}
      D. {3, 5, 7 9}
1b. f(x) = 4  when  x = 12
      f(x) = 20  when  x = 60
      B. 20
1c. f(x) = |4x| + 2
      f(x) = |4(0)| + 2
      f(x) = |0| + 2
      f(x) = 0 + 2
      f(x) = 2
D. (x, f(x)) = (0, 2)

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