Which polygon has an interior angle sum of 900°?
2 answers:
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Question:
What is the result of substituting for y in the bottom equation? y = x – 3 y = x2 + 2x – 4 A. (x – 3) = x2 B. y = (x – 3)2 + 2(x – 3) – 4 C. x – 3 = x2 + 2x – 4 D. y = x2 + 2x – 4 – (x – 3)
Answer:
Option C: is the resulting equation
Explanation:
Given that and
We need to determine the resulting equation by substituting the value of y in the equation
Option A:
Substituting the value of y in the second equation does not results the equation because the last two terms
is missing.
Hence, Option A is not the correct answer.
Option B:
This is not the resulting expression because instead of substituting the value for y, it has been wrongly substituted for x.
Hence, Option B is not the correct answer.
Option C:
This is the resulting expression because substituting in the second equation, we get,
Hence, Option C is the correct answer.
Option D:
This is not the resulting expression because instead of substituting the values for y, the value of y has been subtracted.
Hence, Option D is not the correct answer.