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a and b are real numbers and a^2 ≠ b^2. What value of x makes Iax + bI = Ibx + aI true?
Equation is absolute value of ax + b = absolute value of bx + a
A. 1 Only
B. ±1 Only
C. (a - b) / (a + b)
D. All real numbers
E. No real numbers
1 Answer
Relevance
- KarenLv 61 decade agoFavorite Answer
B. 1 or -1
ax + b = bx + a
(a-b)x = a-b
x = 1
or
ax + b = -bx - a
(a+b)x = -a - b
x = -1
Hope that helps!
(Oh, and thanks for explaining that those "|" were absolute value. I thought they were lower case L's!)
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