Point slope is nicer y-y1=m(x-x1) goes through the point (x1,y1) and has a slope of m
slope itnercept y=mx+b m=slope b=y intercept
first find slope slope between 2 points (x1,y1) and (x2,y2) is (y2-y1)/(x2-x1) given (7,82) and (4,18) slope=(18-82)/(4-7)=-64/-3=64/3
point slope point is (7,82) or you can do (4,18) I'll do both y-82=(64/3)(x-7) or y-18=(64/3)(x-4) those both work
slope intercept slope is 64/3 y=64/3x+b find b input a point (4,18) 18=64/3(4)+b 18=256/3+b minus 256/3 from both sides note: 18=54/3 -202/3=b y=64/3x-202/3 is equation in slpe intercept
