Question

On a sheet of graph paper, using a scale of 1 cm to represent 1 unit on the x-axis and 1 cm to represent 2 units on the y- axis ...​

Answer 1

x=−1,y=3

Plotting 3x+5y=12 and 3x−5y+18=0 in the graph,we get

the point of intersection is (−1,3)