Question

Answer pls with methods

Answer 1

Answer:

hope this answer helps

Answer 2

Answer:

p=  -1/3

q=  -10/3

Step-by-step explanation:

For co-incident lines, the equations must be have infinite solutions.

$\frac{a1}{a2} =\frac{b1}{b2} =\frac{c1}{c2}$

$\frac{a1}{a2} =\frac{b1}{b2}$

$\frac{2}{p+q+1} =\frac{3}{p+2q+2}\\\\ 2p+4q+4=3p+3q+1\\\\q+3=p\\p-q=3-----------(i)$

$\frac{b1}{b2} =\frac{c1}{c2}\\12p+12q+9=7p+14q+14\\5p-2q=5 -------------(ii)$

Solving (i) and (ii), we get:

p= $\frac{-1}{3}$

and q=$\frac{-10}{3}$