Identify Coefficients in y = -4x² + 3: Quadratic Equation Analysis

Identify the coefficients based on the following equation

y=4x2+3 y=-4x^2+3

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Step-by-step video solution

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00:05 Let's find the coefficients of the function.
00:09 We'll use the formula to represent a quadratic equation. Ready? Let's go!
00:25 First, we'll separate the variable from its coefficient. Keep listening!
00:45 Next, we'll compare the formula to our equation and find the coefficients. Almost there!
00:57 And this is how we solve the question. Great job!

Step-by-step written solution

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1

Understand the problem

Identify the coefficients based on the following equation

y=4x2+3 y=-4x^2+3

2

Step-by-step solution

To solve this problem, we'll compare the given quadratic function with its standard form:

  • Step 1: Recognize the given function as y=4x2+3 y = -4x^2 + 3 .
  • Step 2: Write down the standard form of a quadratic function, which is y=ax2+bx+c y = ax^2 + bx + c .
  • Step 3: Match corresponding terms to identify a a , b b , and c c .

Now, let's work through these steps:

Step 1: The given function is y=4x2+3 y = -4x^2 + 3 .

Step 2: The standard form of a quadratic function is y=ax2+bx+c y = ax^2 + bx + c .

Step 3: By direct comparison:
- The coefficient of x2 x^2 in the given expression is 4-4. Therefore, a=4 a = -4 .
- There is no x x term in the given expression, which implies the coefficient b=0 b = 0 .
- The constant term in the given expression is 3 3 , indicating c=3 c = 3 .

Therefore, the solution is a=4 a = -4, b=0 b = 0, c=3 c = 3, which matches with choice 3.

3

Final Answer

a=4,b=0,c=3 a=-4,b=0,c=3

Practice Quiz

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What is the value of the coefficient \( b \) in the equation below?

\( 3x^2+8x-5 \)

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