Select the correct answer find the solution for x in the equation below x(x-1)=42

Grandma made an apple pie. josh and his brother joe finished 4/5 of it. then 3 friends came over and shared the left over. how much pie did each friend eat

What is the ratio of the change in y-values to the change in x-values for this function? a) 1: 13 b) 2: 5 c) 5: 2 d) 13: 1

Can someone me do math because i am having a breakdown rn because i don’t get it