3y=6+x y=(6+x)/3 y=2+x/3 y=mx+b y=x/3+b so m(slope) is 1/3 use the point (3, 5), sub this for x and y 5=3/3+b 5-1=b b=4 therefore, y=x/3+4 or y=(1/3)x+4 (you can write it like this as well)
Calculate the determinant. Calculate the matrix of cofactors. Transpose the matrix of cofactors to obtain the adjugate matrix. Divide each entry of the adjugate matrix by the determinant to obtain the inverse.
