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PLEASE I BEG OF YOU!! CAN SOMEONE HELP ME ON THE LAST 8 QUESTIONS ON THIS WORKSHEET?


Question 12
Marks: 4
[3.05]

Which of the following does not represent a function?
Choose one answer.
a.
x в€’3 0 1 в€’3 1
y 1 в€’1 в€’2 в€’3 в€’4

b.
x 3 6 9 12 18
y 1 3 5 7 5

c.
x в€’4 в€’2 0 2 4
y в€’5 в€’4 в€’3 в€’2 в€’1

d.
x 6 5 4 3 1
y в€’6 в€’5 в€’4 в€’3 в€’1

Question 14
Marks: 4
[3.05]

Choose the relation with a domain of {в€’6, в€’3, в€’2, 0, 5}.
Choose one answer.
a. R = {(в€’6, в€’3), (в€’2, в€’2), (0, 5)}
b. R = {(6, 5), (3, 0), (5, в€’3), (5, в€’6), (8, в€’2)}
c. R = {(5, 0), (в€’2, в€’2), (в€’3, в€’6)}
d. R = {(в€’3, 5), (в€’6, 4), (в€’2, 2), (5, в€’2) (0, в€’1)}

Question 15
Marks: 4
[3.05]

Choose the relation with a range of {в€’4, в€’2, 0, 1, 3}.
Choose one answer.
a. R = {(2, 3), (8, 1), (2, 1), (в€’5, 0), (4, в€’4), (5, в€’2)}
b. R = {(3, 2), (1, 8), (1, 2), (0, в€’5), (в€’4, 4), (в€’2, 5)}
c. R = {(в€’4, в€’2), (0, 0), (1, 3)}
d. R = {(3, 1), (0, 0), (в€’2, в€’4)}

Question 16
Marks: 4
[3.06]

Given the function g(x) = 8x в€’ 2, compare and contrast g(в€’2) and g(4). Choose the statement that is true concerning these two values.
Choose one answer.
a. The value of g(в€’2) is larger than the value of g(4).
b. The value of g(в€’2) is the same as the value of g(4).
c. The value of g(в€’2) is smaller than the value of g(4).
d. The values of g(в€’2) and g(4) cannot be compared.

Question 17
Marks: 4
[3.06] If f(x) = 2x + 6, find f(7).
Choose one answer.
a. 14
b. 15
c. 20
d. 6

Question 18
Marks: 4
[3.06]

If f(x) = в€’4x + 1, find f(в€’5).
Choose one answer.
a. 20
b. в€’19
c. 21
d. в€’8

19
Marks: 4
[3.06]

If g(x) = x2 в€’ 3, find g(4).
Choose one answer.
a. 13
b. 5
c. 16
d. в€’3

Question 20
Marks: 4
[3.06]

If f(x) = x + 3, find the value of x if f(x) = 9.
Choose one answer.
a. 6
b. 12
c. 3
d. 9

12.) &quot:a&quot: does not represent a function because for x=-3, there are two &quot:y&quot: values. This cannot happen in a function.

14.) The domain is all &quot:x&quot: values of the function, so the correct answer has &quot:x&quot: values of -6, -3, -2, 0, and 5, which is &quot:d&quot:.

15.) The range is all &quot:y&quot: values of the function, so the correct answer has &quot:y&quot: values of -4, -2, 0, 1, and 3, which is &quot:a&quot:.

16.) Plug in -2 and 4 for &quot:x&quot: in the function and compare:
g(x) = 8x-2
g(-2) = 8(-2) – 2
g(-2) = -16 – 2
g(-2) = -18

g(x) = 8x-2
g(4) = 8(4) – 2
g(4) = 32 – 2
g(4) = 30

As you can see, g(-2) is smaller than g(4), which is &quot:c&quot:.

17.) Plug in 7 for &quot:x&quot: and solve:
f(x) = 2x + 6
f(7) = 2(7) + 6
f(7) = 14 + 6
f(7) = 20

18.) Plug in -5 for &quot:x&quot: and solve:
f(x) = -4x + 1
f(-5) = -4(-5) + 1
f(-5) = 20 + 1
f(-5) = 21

19.) Plug in 4 for &quot:x&quot: and solve:
g(x) = x^2 – 3
g(4) = 4^2 – 3
g(4) = 16 – 3
g(4) = 13

20.) Plug in 9 for f(x) and solve:
f(x) = x + 3
9 = x + 3
x = 6

Question17
F(x)=2(7)+6=20

Question 18
F(-5)=-4(-5)+1=21
Question 19
G(4)=4(2)-3
=5

Question 20. Answer is 3
If x is 9… 9=9+3….
9-9+3=3

have you really studied &quot:functions&quot:? or started solving problems directly?

m extremely sorry!! Maths is allergy for me

Do your own homework .

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