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scoundrel [369]
4 years ago
14

Evaluate the expression below when x = -1. 2x2 − 5 x + 9 -7 8 -3 8 -1 8 -1

Mathematics
1 answer:
nata0808 [166]4 years ago
3 0
Plug in the -1 inside the given equation:

y=2x²-5x+9-78-38-18-1

y=2(-1)²-5(-1)-126= -119
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Gerald graphs the function f(x) = (x – 3)2 – 1. Which statements are true about the graph? Select three options.
Phoenix [80]

Answer:

The answer is "Choice B, C, and F is correct".

Step-by-step explanation:

The following are choices, which is missing in the question, that can be defined as follows:

A) {x| x ≥ 3} is the domain.  

B) The set shall be {y| y ≥ –1}.  

C) over the interval  (–∞, 3), is the function, that decreases.  

D) it's over the duration the function increases its value, that is (–1, ∞).  

E) The symmetry axis will be x = – 1.  

F) vertex is (3, – 1).

  • In choice A, It is incorrect even though f is the domain, which is all true numbers because it has a quadrant function.  
  • In choice B, it is correct.  
  • In choice C, It is valid because it was a parable open with vertex so if we exploded view f (3, -1). Because as value opens up, its value with x from-∞ to 3 drops while it goes up from increasing from 3 to ∞.    
  • In choice D, It is wrong since we have just said f decreases from-∞ to 3. Therefore, f decreases from -1 to 3, too. Therefore, f doesn't grow from -1 to ∞.  
  • In choice E, It is incorrect because the symmetry axis is x = 3.  
  • In choice F, it is true.
6 0
4 years ago
A polynomial function can be written as (x − 1)(x − 4)(x + 7). What are the x-intercepts of the graph of this function?
Mariulka [41]
(x - 1)(x - 4)(x + 7) = 0 ⇔ x - 1 = 0 or x - 4 = 0 or x + 7 = 0

x = 1 or x = 4 or x = -7

Answer: c. (1; 0); (4; 0); (-7; 0)
3 0
3 years ago
Read 2 more answers
What is the slope-intercept form of 6x - y - 2 = 0
nordsb [41]

Answer:

y=6x-2

Step-by-step explanation:

6x-y-2-6x=0-6x

-y-2=-6x

-y-2+2=-6x+2

-y=-6x+2

-y/-1=-6x/-1+2/-1

y=6x-2

4 0
3 years ago
4/9 times what equals 1?
ArbitrLikvidat [17]
4/9 *9/4 =1
Use the reciprocal to find your answer :)
Cheers :3
8 0
3 years ago
GEOMERTY QUESTIONS!!!!!!!!!
Lera25 [3.4K]

Answer: The answer to the first question is C. The answer to the second question is A.

7 0
3 years ago
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