Mathematics
Assertion (A): For the equation 4y - 7x + 28 = 0, the value of a is -8. x -7 8 y a 7 Reason (R): 4y - 7x + 28 = 0 ⇒ 4y + 49 + 28 = 0 ⇒ y = -77/4 i.e. a = -(77/4) 1. A is true, R is false. 2. A is false, R is true. 3. Both A and R are true. 4. Both A and R are false.
Related Questions
Assertion (A): y + 5 = 0 is the equation of line parallel to x-axis and at a distance of 5 units in negative direction from it.
Reason (R): All points on the line y = a, the value of abscissa (x-coordinate) = a.
- A is true, R is false.
- A is false, R is true.
- Both A and R are true.
- Both A and R are false.
Assertion (A): The graph of 2x = 1 is a line parallel to y-axis.
Reason (R): The equations of the form x = ± k are always parallel to y-axis.
- A is true, R is false.
- A is false, R is true.
- Both A and R are true.
- Both A and R are false.
Assertion (A): The cost of manufacturing x identical articles is ₹ 5(30 + x) and their selling price is ₹ 8x. The number of these articles manufactured and sold to break even is 50.
Reason (R):
5(30 + x) = 8x
150 + 5x = 8x ⇒ x = 50- A is true, R is false.
- A is false, R is true.
- Both A and R are true.
- Both A and R are false.