## Precalculus (6th Edition) Blitzer

Substituting 4 to $x$ in $y=x^2+3$ gives: $y=x^2+3 \\y=4^2+3 \\y=16+3 \\y=19$ Thus, the point $(4, 19)$ is a solution of $y=x^2+3$. So $(4, 19)$ satisfies the equation. Therefore, the missing expressions in the given statements are : solution; satisfies