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egardner4667
24.08.2019 •
Mathematics
Let g(x) be the indicated transformation of f(x). write the rule for g(x)
linear function defined by the table, vertical translation 1.5 units up.
x -2 -1 0
f(x) 3.5 2 0.5
include explanation
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Ответ:
f(x) = -1.5 x + 0.5
Step-by-step explanation:
* Lets explain how to solve the problem
- The form of the linear function is f(x) = mx + c, where m is the slope
of the line which represents the function and c is the y-intercept
- The y-intercept is the intersection between the graph of the function
and the y-axis at point (0 , c)
- The rule of the slope of a line whose endpoints are
- If the function f(x) translated vertically up by k units, then the
new function g(x) = f(x) + k
- If the function f(x) translated vertically down by k units, then the
new function g(x) = f(x) – k
∵ f(x) represented by the table:
x : -2 , -1 , 0
f(x): 3.5 , 2 , 0.5
∴ The line which represent the linear function f(x) contains the
points (-2 , 3.5) , (-1 , 2) , (0 , 0.5)
- Let
= (-2 , 3.5) and
= (-1 , 2)
∴ The slope of the function![m=\frac{2-3.5}{-1--2}}](/tpl/images/0193/2669/92eee.png)
∴
= -1.5
∵ The function f(x) = mx + c
∵ m = -1.5 and c = 0.5
∴ f(x) = -1.5 x + 0.5
∵ g(x) is the translation of f(x) 1.5 units up
- According to the rule of translation above
∴ g(x) = f(x) + k
∵ k = 1.5
∵ f(x) = -1.5 x + 0.5
∴ g(x) = -1.5 x + 0.5 + 1.5
∴ g(x) = -1.5 x + 2
Ответ:
X=92.49 m
Explanation:
Given that
u= 21 m/s
h= 97 m
Time taken to cover vertical distance h
h= 1/2 g t²
By putting the values
97 = 1/2 x 10 x t² ( g = 10 m/s²)
t= 4.4 s
The horizontal distance
X= u .t
X= 21 x 4.4
X=92.49 m