Question

7. Solve the following system of linear equations graphically:
4x - 5y - 20 = 0, 3x + 5y - 15 = 0
Determine the vertices of the triangle formed by the lines, representing the above equations,
and the y-axis.​

Answer 1

Answer:

4x -5y -20 = 0 (1)

3x +5y - 15 = 0 (2)

by elimination method in equation 1 and 2

4x -5y -20

3x +5y -15

7x +0y -35 =0

7x = 35

x = 35/7 = 5

put the value of x an equation 2

3(5) + 15y = 15

15y = 15 - 15

y = 0/5

y = 0