What is the solution to this system of linear equations?
y − 4x = 7
2y + 4x = 2
(3, 1)
(1, 3)
(3, −1)
(−1, 3)

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)