Matrices and Determinants
Applications of Differentiation
Descriptive Statistics and Probability
Correlation and Regression Analysi
- Various forms of Straight Lines
3.2.2 Angle between two straight lines
3.2.3 Distance of a point from a line
3.2.4 Concurrence of three lines
- Conditions for three given straight lines to be concurrent
Find the value of ‘a’ for which the straight lines 3x + 4y = 13; 2x – 7y = -1 and ax – y – 14 = 0 are concurrent.
A manufacturer produces 80 TV sets at a cost of ₹ 2,20,000 and 125 TV sets at a cost of ₹ 2,87,500. Assuming the cost curve to be linear, find the linear expression of the given information. Also, estimate the cost of 95 TV sets.
As the number of units produced increases from 500 to 1000 and the total cost of production increases from ₹ 6000 to ₹ 9000. Find the relationship between the cost (y) and the number of units produced (x) if the relationship is linear.