Question

2. Find the equation of a parabola with axis parallel to 0y and passing through (1, 9), (-2, 9), (-1, 1).

Answer 1

the general form of this equation will be y = ax^2 + bx + c

so, all we need to do is substitute each point in this and form three new equations in terms of a, b & c, after which we use simultaneous equations to solve the co-efficients.

Answer 2

give it a try and see what happens

Answer 3

Thank you

Answer 4

So I should make 3 equations?

Answer 5

yes, that's right. 3 equations with 3 unknowns will allow you to solve a,b and c