m= 6 (4,9 ) Write the equation in the form Ax+By =C
y=mx+bm=slopeb=y interceptwer are given the point (4,9), therefor one solution is x=4, y=9 so subsitute ad solve for b9=6(4)+b9=24+bsubtract 24-15=btherefory=4x-15subtract 4x from both sides-4x+1y=-15 or4x-y=15