Question

find the distance between 12x-5y+9=0 and the point (2,1)

Answer 1

we need to find distance so we can find the distance by using distance formula

Ax1+By1+C/under root A*2+B*2

here A=12 B=-5 C=9 X1=2 YI=1

SO 12×2+5×(-5)+9/under root 12*2+5*2
24-25+9/13
8/13
so the answer is 8/13

I hope it helps you