Which of these are opposites of each other?

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?