# Category Archives: Grade 11

# quadratic function

Part 1

- Quadratic function is one of the form f(x) = ax
^{2}+ bx + c, where a, b, and c are numbers with a not equal to zero. The graph of a quadratic function is a curve called a parabola. - Y=3x
^{2}+x-3, y=3x^{2}+2x+3 - The first function the curve it up but second function the curve it down
- The graph doesnâ€™t have a minimum point but not maximum
- When a greater than 0 the vertex is minimum, when a less than 0 it
- -1<0, 1>0, -1>0>-1

Part 2

- Y=1x
^{2 }+0x+1.6 a curve that just touches the x axis (y=0) - Y=1x
^{2 }+0x-1.1 one solutions - Y=1x
^{2}+0x-5.9 two solutions