यदि (Y(x)=a+8x) रेखीय वृद्धि है और (Y(3)+Y(9)=180), तो (a) क्या है?
If (Y(x)=a+8x) is linear growth and (Y(3)+Y(9)=180), what is (a)?
Explanation opens after your attempt
B. (42)
Concept
(Y(3)+Y(9)=(a+24)+(a+72)=2a+96). From (2a+96=180), (a=42).
Why this answer is correct
The correct answer is B. (42). (Y(3)+Y(9)=(a+24)+(a+72)=2a+96). From (2a+96=180), (a=42).
Exam Tip
(Y(3)+Y(9)=(a+24)+(a+72)=2a+96) है। (2a+96=180) से (a=42) मिलता है।
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