Function Notation: Mastery Test

Given the function [tex]f(x) = \frac{3}{2} x + 4[/tex], plot all the ordered pairs for the values in the domain below.

[tex]\{-8, -4, -2, 0, 2, 4\}[/tex]



Answer :

Let's find the ordered pairs using the given function [tex]\( f(x) = \frac{3}{2}x + 4 \)[/tex] for each value in the domain [tex]\( \{-8, -4, -2, 0, 2, 4\} \)[/tex].

1. For [tex]\( x = -8 \)[/tex]:
[tex]\[ f(-8) = \frac{3}{2}(-8) + 4 = \frac{3 \times -8}{2} + 4 = -12 + 4 = -8 \][/tex]
So, the ordered pair is [tex]\((-8, -8)\)[/tex].

2. For [tex]\( x = -4 \)[/tex]:
[tex]\[ f(-4) = \frac{3}{2}(-4) + 4 = \frac{3 \times -4}{2} + 4 = -6 + 4 = -2 \][/tex]
So, the ordered pair is [tex]\((-4, -2)\)[/tex].

3. For [tex]\( x = -2 \)[/tex]:
[tex]\[ f(-2) = \frac{3}{2}(-2) + 4 = \frac{3 \times -2}{2} + 4 = -3 + 4 = 1 \][/tex]
So, the ordered pair is [tex]\((-2, 1)\)[/tex].

4. For [tex]\( x = 0 \)[/tex]:
[tex]\[ f(0) = \frac{3}{2}(0) + 4 = 0 + 4 = 4 \][/tex]
So, the ordered pair is [tex]\((0, 4)\)[/tex].

5. For [tex]\( x = 2 \)[/tex]:
[tex]\[ f(2) = \frac{3}{2}(2) + 4 = \frac{3 \times 2}{2} + 4 = 3 + 4 = 7 \][/tex]
So, the ordered pair is [tex]\((2, 7)\)[/tex].

6. For [tex]\( x = 4 \)[/tex]:
[tex]\[ f(4) = \frac{3}{2}(4) + 4 = \frac{3 \times 4}{2} + 4 = 6 + 4 = 10 \][/tex]
So, the ordered pair is [tex]\((4, 10)\)[/tex].

Given these calculations, the complete list of ordered pairs for the domain [tex]\(\{-8, -4, -2, 0, 2, 4\}\)[/tex] are:

[tex]\[ \{ (-8, -8), (-4, -2), (-2, 1), (0, 4), (2, 7), (4, 10) \} \][/tex]

These are the points that we would plot on a graph for the function [tex]\( f(x) = \frac{3}{2}x + 4 \)[/tex].