QUESTION IMAGE
Question
compare the two functions f(x) and g(x).
f(x) has an initial value of 3 and a constant rate of change of \\(\frac{3}{2}\\).
values for g(x) are shown in the table
| x | -2 | -1 | 0 | 1 | 2 |
| g(x) | -2 | 1 | 4 | 7 | 10 |
use the drop - down arrows to complete the sentences.
f(x) changes at \\(\boldsymbol{\text{dropdown}}\\) g(x).
the y - intercept of f(x) is \\(\boldsymbol{\text{dropdown}}\\) the y - intercept of g(x).
f(x) is \\(\boldsymbol{\text{dropdown}}\\) and g(x) is \\(\boldsymbol{\text{dropdown}}\\).
Step1: Find rate of change of $g(x)$
Rate of change: $\frac{1 - (-2)}{-1 - (-2)} = \frac{3}{1} = 3$
Step2: Compare rates of change
Rate of $f(x) = \frac{5}{2} = 2.5$, which is less than 3.
Step3: Find y-intercepts
y-intercept of $f(x) = 3$; y-intercept of $g(x) = 4$ (when $x=0$).
Step4: Identify function types
Both have constant rates, so they are linear.
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- $f(x)$ changes at a slower rate than $g(x)$.
- The y-intercept of $f(x)$ is less than the y-intercept of $g(x)$.
- $f(x)$ is linear and $g(x)$ is linear.