Question

If a line passes through the point (1,9) and has a slope of 6 , write it as an equation

Answer 1

$y= mx+b$

$y=6x+b$

$(9)=6(1)+b$

$9=6+b$

$3 = b$

$y=6x+3$

Answer 2

$y-y_1=m(x-x_1)\\ y-9=6(x-1)\\ y=6x-6+9\\ y=6x+3$