Question

4 The width of a rectangular dance floor

length of the floor is 6 feet longer than
Which of the following expresses the pe
feet, of the dance floor in terms of w?
If f(x) = -2x + 5, what is f(-3x) equal to?
A) 2w+6
A) -6x - 5
B) 4w +12
C) 2+ 6
D) w*+ów
B) 6x + 5
Forms of Linear Equations
C) 6x-5
D) 6x2 – 15x
Linear equations can be expressed
*Note: The word "output" is intercha
Slope-Intercept Form
Select one:
O a. 6x + 5
y = mx + b
O b. 6x2 – 15x
m = slope or rate
• The change in output forex
1 for the input
O c.
- 6x - 5
buy-intercept
O 5
d. 6x - 5​

Answer 1

`\boxed{\sf a. \ 6x + 5}`

Given:

f(x) = -2x + 5

To Find:

f(-3x)

Explanation:

`\sf Evaluate \ f(x) \ by \ substituting \ in \ the \\ \sf value \ of \ x = -3x \ into \ f(x): \\ \sf f( - 3x) = -2( - 3x) + 5 \\ \\ \ \ \ \ \ \ \ \ \ \ \ \ \sf = 6x + 5`