How are the SSS similarity criterion and the SSS congruence criterion alike? How are they different?

Can someone me and do the problem plz so i can understand it more better

Which equation could represent the relationship shown in the scatter plot? y=−3x−2 y=−3/4x+10 y=−2/3x+1 y=9x−12 scatter plot with x axis labeled variable x and y axis labeled variable y. points go from upper left to lower right.

Find the slope intercept form of (-3,6) and (3,-6)