## Introductory Algebra for College Students (7th Edition)

The graph of the quadratic function $y=ax^2+bx+c$ is a parabola that opens up if $a\gt0$ or opens down if $a\lt0$. In the given equation, $y=x^2-4x+3 ,$ the value of $a$ is $a= 1 .$ Hence, the parabola opens $\text{ upward }.$