Question

for which values of k the graphs of the pair of linear equation 2x+5y-3=0, 6x+15y-k=0 are coincident lines???​

Answer 1

Answer:

k=9

Step-by-step explanation:

2x+5y-3=0

6x+15y-k=6

for lines to be coincidence

their ratio should be

A1/b1=b1/b2=c1/c2

2/6=5/15=3/k

3/k=5/15

3/k=1/3

k=9