यदि (y=70+ax) में (x=4) से (x=9) तक (y) (35) बढ़ता है, तो (a) क्या है?
If in (y=70+ax), (y) increases by (35) from (x=4) to (x=9), what is (a)?
Explanation opens after your attempt
C. (7)
Concept
The change in (x) is (5). From (5a=35), (a=7).
Why this answer is correct
The correct answer is C. (7). The change in (x) is (5). From (5a=35), (a=7).
Exam Tip
(x) में परिवर्तन (5) है। (5a=35) से (a=7) मिलता है।
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