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3 years ago

7. If f(x) = -8x +11, find f(-4).

Mathematics

2 answers:

Tomtit [17]3 years ago

5 0

Answer:

F(-4)=43

Step-by-step explanation:

1.Replace X to -4

f(-4)= -8(-4)+11

2.Solve

Multiplying two negative give you a positive (-8 x -4=32).

Then you Add.

32+11=43.

Hope this help!

kobusy [5.1K]3 years ago

3 0

Answer:

Step-by-step explanation:

f(x) = -8x +11, for f(-4).

= -8(-4)+11

= 32 + 11

= 43

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AleksAgata [21]

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General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (3, -10)

Point (4, -21)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m=\frac{-21+10}{4-3}$
[Fraction] Add/Subtract: $\displaystyle m=\frac{-11}{1}$
[Fraction] Divide: $\displaystyle m=-11$

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3 years ago

7. If f(x) = -8x +11, find f(-4).​

7. If f(x) = -8x +11, find f(-4).