Question

;;Find the quadratic polynomial whose graph passes through the points (1, 1), (2, 2 ), and (3, 5

Answer 1

the generally form is :
y=ax^2 + bx + c
we just plug each coordinat points to the that formula

Answer 2

after that

Answer 3

after that we w'll get 3 system of linear equation with 3 variable..
solve that equation use with elimination or subtitution methods

Answer 4

for example : when the graph passes through point (1,1), we get the first equation is