Advertisements
Advertisements
प्रश्न
If the pair of equations ax + 2y = 7 and 3x + by = 16 represent parallel lines, then ab = ______.
रिक्त स्थान भरें
Advertisements
उत्तर
If the pair of equations ax + 2y = 7 and 3x + by = 16 represent parallel lines, then ab = 6.
Explanation:
For parallel lines the slopes are equal.
From ax + 2y = 7, slope = `-a/2`.
From 3x + by = 16, slope = `-3/b`.
So `-a/2 = -3/b`
⇒ `a/2 = 3/b`
⇒ ab = 6
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
