QUESTION IMAGE
Question
complete the table of values for the functions $f(x) = -2x + 6$ and $g(x) = 2(x - 1)^2$. write your answers as whole numbers, decimals, or simplified fractions or mixed numbers. \
based on the values in the table, where does the equation $f(x) = g(x)$ have a solution? between $x = 0$ and $x = 1$ $x = 1$ between $x = 1$ and $x = 2$ $x = 2$
Part 1: Completing the table for \( f(x) = -2x + 6 \) and \( g(x) = 2(x - 1)^2 \)
For \( f(x) = -2x + 6 \):
- When \( x = 0 \):
Step 1: Substitute \( x = 0 \) into \( f(x) \)
\( f(0) = -2(0) + 6 \)
Step 2: Simplify
\( f(0) = 0 + 6 = 6 \)
- When \( x = 1 \):
Step 1: Substitute \( x = 1 \) into \( f(x) \)
\( f(1) = -2(1) + 6 \)
Step 2: Simplify
\( f(1) = -2 + 6 = 4 \)
- When \( x = 2 \):
Step 1: Substitute \( x = 2 \) into \( f(x) \)
\( f(2) = -2(2) + 6 \)
Step 2: Simplify
\( f(2) = -4 + 6 = 2 \)
- When \( x = 3 \):
Step 1: Substitute \( x = 3 \) into \( f(x) \)
\( f(3) = -2(3) + 6 \)
Step 2: Simplify
\( f(3) = -6 + 6 = 0 \)
- When \( x = 4 \):
Step 1: Substitute \( x = 4 \) into \( f(x) \)
\( f(4) = -2(4) + 6 \)
Step 2: Simplify
\( f(4) = -8 + 6 = -2 \)
For \( g(x) = 2(x - 1)^2 \):
- When \( x = 0 \):
Step 1: Substitute \( x = 0 \) into \( g(x) \)
\( g(0) = 2(0 - 1)^2 \)
Step 2: Simplify the exponent
\( g(0) = 2(-1)^2 = 2(1) = 2 \)
- When \( x = 1 \):
Step 1: Substitute \( x = 1 \) into \( g(x) \)
\( g(1) = 2(1 - 1)^2 \)
Step 2: Simplify the exponent
\( g(1) = 2(0)^2 = 2(0) = 0 \)
- When \( x = 2 \):
Step 1: Substitute \( x = 2 \) into \( g(x) \)
\( g(2) = 2(2 - 1)^2 \)
Step 2: Simplify the exponent
\( g(2) = 2(1)^2 = 2(1) = 2 \)
- When \( x = 3 \):
Step 1: Substitute \( x = 3 \) into \( g(x) \)
\( g(3) = 2(3 - 1)^2 \)
Step 2: Simplify the exponent
\( g(3) = 2(2)^2 = 2(4) = 8 \)
- When \( x = 4 \):
Step 1: Substitute \( x = 4 \) into \( g(x) \)
\( g(4) = 2(4 - 1)^2 \)
Step 2: Simplify the exponent
\( g(4) = 2(3)^2 = 2(9) = 18 \)
Filled Table:
| \( x \) | \( f(x) \) | \( g(x) \) |
|---|---|---|
| 1 | 4 | 0 |
| 2 | 2 | 2 |
| 3 | 0 | 8 |
| 4 | -2 | 18 |
Part 2: Finding where \( f(x) = g(x) \)
We look for intervals where \( f(x) \) and \( g(x) \) cross (i.e., where \( f(x) \) and \( g(x) \) change from \( f(x) > g(x) \) to \( f(x) < g(x) \) or vice versa).
- At \( x = 0 \): \( f(0) = 6 \), \( g(0) = 2 \) (so \( f(x) > g(x) \))
- At \( x = 1 \): \( f(1) = 4 \), \( g(1) = 0 \) (so \( f(x) > g(x) \))
- At \( x = 2 \): \( f(2) = 2 \), \( g(2) = 2 \) (Wait, actually, let's check the values again. Wait, at \( x=1 \), \( f(1)=4 \), \( g(1)=0 \); at \( x=2 \), \( f(2)=2 \), \( g(2)=2 \)? Wait, no, wait: \( g(2) = 2(2-1)^2 = 2(1) = 2 \), and \( f(2) = -2(2) +6 = 2 \). Wait, but let's check the interval between \( x=1 \) and \( x=2 \):
Wait, maybe I made a mistake. Wait, let's re-express the functions:
\( f(x) = -2x +6 \) (linear, decreasing)
\( g(x) = 2(x-1)^2 \) (parabola opening upwards, vertex at \( (1, 0) \))
At \( x=1 \): \( f(1)=4 \), \( g(1)=0 \) (so \( f > g \))
At \( x=2 \): \( f(2)=2 \), \( g(2)=2 \) (so \( f = g \) at \( x=2 \)? Wait, but the options include "between \( x=1 \) and \( x=2 \)" or \( x=2 \). Wait, let's check the table again:
Wait, when \( x=1 \): \( f(1)=4 \), \( g(1)=0 \)
When \( x=2 \): \( f(2)=2 \), \( g(2)=2 \)
Wait, but the problem's options: "between \( x=0 \) and \( x=1 \)", "between \( x=1 \) and \( x=2 \)", "x=1", "x=2".
Wait, but let's check the values:
At \( x=1 \): \( f(1)=4 \), \( g(1)=0 \) (f > g)
At \( x=2 \): \( f(2)=2 \), \( g(2)=2 \) (f = g)
Wait, but maybe I miscalculated \( g(2) \). Wait, \( g(2) = 2(2-1)^2 = 2(1) = 2 \), and \( f(2…
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s:
Table Completion:
- \( x=0 \): \( f(0)=6 \), \( g(0)=2 \)
- \( x=1 \): \( f(1)=4 \), \( g(1)=0 \)
- \( x=2 \): \( f(2)=2 \), \( g(2)=2 \)
- \( x=3 \): \( f(3)=0 \), \( g(3)=8 \)
- \( x=4 \): \( f(4)=-2 \), \( g(4)=18 \)
Solution to \( f(x) = g(x) \):
\( x = 2 \) (or between \( x=1 \) and \( x=2 \), but since at \( x=2 \) they are equal, the answer is \( x=2 \))
Final Answers for the Table (filled):
| \( x \) | \( f(x) \) | \( g(x) \) |
|---|---|---|
| 1 | 4 | 0 |
| 2 | 2 | 2 |
| 3 | 0 | 8 |
| 4 | -2 | 18 |
Solution to \( f(x) = g(x) \):
\( \boldsymbol{x = 2} \) (or the option "x = 2" from the choices)