Find Coefficients in the Linear Equation y=6-3x: Step-by-Step

Quadratic Form Coefficients with Linear Equations

Identify the coefficients based on the following equation

y=63x y=6-3x

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find the function coefficients
00:03 Use the formula to represent a quadratic equation
00:11 Arrange the equation to match the formula
00:33 Separate the variable from the coefficient
00:42 Compare the formula to our equation and find the coefficients
00:50 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Identify the coefficients based on the following equation

y=63x y=6-3x

2

Step-by-step solution

To solve this problem, we need to match the parameters of the given equation y=63xy = 6 - 3x with the standard quadratic form y=ax2+bx+cy = ax^2 + bx + c.

Here are the steps we will follow:

  • Step 1: Identify the coefficients in the given equation.
  • Step 2: Compare these coefficients with the standard form y=ax2+bx+cy = ax^2 + bx + c.
  • Step 3: Determine the values of aa, bb, and cc.

Let's apply these steps:

Step 1: The given equation is y=63xy = 6 - 3x. Notice that there is no x2x^2 term. We can write it in a form closer to the quadratic standard by expressing it as:

y=0x23x+6y = 0x^2 - 3x + 6

Step 2: Compare this with the quadratic form y=ax2+bx+cy = ax^2 + bx + c:

  • The coefficient of x2x^2 is 0, so a=0a = 0.
  • The coefficient of xx is -3, so b=3b = -3.
  • The constant term is 6, so c=6c = 6.

Therefore, the parameters for the quadratic form are a=0a = 0, b=3b = -3, and c=6c = 6.

Finally, when we check the answer choices provided, we find that choice 1 matches our derived coefficients.

The correct choice is: a=0,b=3,c=6a = 0, b = -3, c = 6.

3

Final Answer

a=0,b=3,c=6 a=0,b=-3,c=6

Key Points to Remember

Essential concepts to master this topic
  • Standard Form: Quadratic form is y=ax2+bx+c y = ax^2 + bx + c
  • Technique: Rewrite y=63x y = 6 - 3x as y=0x2+(3)x+6 y = 0x^2 + (-3)x + 6
  • Check: Verify a=0, b=-3, c=6 by comparing term positions ✓

Common Mistakes

Avoid these frequent errors
  • Confusing coefficient order when identifying a, b, c
    Don't assign coefficients randomly like a=6, b=-3, c=0 = wrong positions! Students often mistake the constant term for coefficient 'a'. Always match terms by their powers: a goes with x², b with x¹, c with x⁰.

Practice Quiz

Test your knowledge with interactive questions

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

\( 4x^2+9x-2 \)

FAQ

Everything you need to know about this question

Why is the coefficient 'a' equal to 0 when there's no x² term?

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When a term is missing, its coefficient is 0. Since y=63x y = 6 - 3x has no x2 x^2 term, we write it as 0x2 0x^2 , so a = 0.

How do I remember which coefficient is which?

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Think alphabetically: 'a' goes with the highest power (x2 x^2 ), 'b' with middle power (x1 x^1 ), and 'c' is the constant (no x).

What if the equation is written as y = -3x + 6 instead?

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The order doesn't matter! Whether it's y=63x y = 6 - 3x or y=3x+6 y = -3x + 6 , you still get the same coefficients: a = 0, b = -3, c = 6.

Is this actually a linear or quadratic equation?

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It's a linear equation because the highest power of x is 1. However, we can still express it in quadratic form with a = 0 to identify all coefficients.

Why is b = -3 and not +3?

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Look carefully at the signs! The equation shows 3x -3x , so the coefficient of x is negative 3. Always include the sign as part of the coefficient.

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