Question

everything you know help me pls ​

Answer 1

Answer:

c

x+y=35,

x-y=13

Add both the equation

2x=48, x=24

put this value of x in the of the above equations

24+y=35, y=11

y=mx+3

put values of x and y in this equation

5=-2m+3

-2m=2, m=-1

for equal roots, condition is b^2=4ac

Here b=4k, a=16, c=9

put the values in the above condition

16k^2=4.16.9

k^2=4×9

k=2×3=6