Question 7 (1 point)
Solve the System of Equations by using the Substitution Method.
2x-3y=-1
y=x-1
(0,5)
(2.1)
(4.3)
(6,3)

Picture added

What can you determine about the solutions of this system

Pranza plotted point a in the coordinate plane below.

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?