Find Coefficients in y=44-11x: Linear Equation Analysis

Quadratic Coefficients with Linear Equations

Identify the coefficients based on the following equation

y=4411x y=44-11x

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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
00:17 Arrange the equation to match the formula
00:40 Separate the variable from the coefficient
00:51 Compare the formula to our equation and find the coefficients
00:58 And this is the solution to the problem

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=4411x y=44-11x

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the given equation, y=4411xy = 44 - 11x.
  • Step 2: Compare it to the standard quadratic equation form, y=ax2+bx+cy = ax^2 + bx + c.
  • Step 3: Determine the values of aa, bb, and cc that make the equations equivalent.

Now, let's work through each step:
Step 1: The given equation is y=4411xy = 44 - 11x. This is a linear equation, not quadratic, because it lacks the x2x^2 term.
Step 2: The standard form for a quadratic equation is y=ax2+bx+cy = ax^2 + bx + c. In our case, since there is no x2x^2 term, we can deduce a=0a = 0.
Step 3: Compare terms. The equation can be rewritten as y=0x211x+44y = 0 \cdot x^2 - 11x + 44. By comparing both sides with ax2+bx+cax^2 + bx + c, we find:

  • a=0a = 0 since there is no x2x^2 term.
  • b=11b = -11 which is the coefficient of xx.
  • c=44c = 44, which is the constant term.

Therefore, the parameters are a=0\mathbf{a = 0}, b=11\mathbf{b = -11}, c=44\mathbf{c = 44}, matching choice 2.

3

Final Answer

a=0,b=11,c=44 a=0,b=-11,c=44

Key Points to Remember

Essential concepts to master this topic
  • Standard Form: Compare given equation to ax2+bx+c ax^2 + bx + c
  • Missing Terms: When x² term absent, coefficient a = 0
  • Verification: Rewrite as y=0x211x+44 y = 0x^2 - 11x + 44 to confirm coefficients ✓

Common Mistakes

Avoid these frequent errors
  • Confusing linear and quadratic coefficient positions
    Don't assign the constant 44 to coefficient a = equation becomes wrong form! Linear equations still follow quadratic structure with a = 0. Always identify missing x² term first, then assign remaining coefficients correctly.

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 a = 0 when there's no x² term?

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The coefficient a represents what multiplies x². Since there's no x² term in y=4411x y = 44 - 11x , we have 0 times x², making a = 0.

How do I identify coefficients in a mixed-up equation?

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Rearrange first! Rewrite y=4411x y = 44 - 11x as y=0x2+(11)x+44 y = 0x^2 + (-11)x + 44 . Now you can easily see: a = 0, b = -11, c = 44.

Is this still a quadratic equation if a = 0?

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Technically no - when a = 0, it becomes a linear equation. But we can still use quadratic form to identify coefficients for comparison purposes.

Why is b = -11 and not +11?

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Look carefully at the signs! The equation shows -11x, so b = -11. Don't let the subtraction fool you - the coefficient of x is negative eleven.

What if I wrote y = -11x + 44 instead?

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That's the same equation! Addition is commutative, so -11x + 44 = 44 + (-11x) = 44 - 11x. The coefficients remain: a = 0, b = -11, c = 44.

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