Using Intersections to Solve Equivalent Functions Practice Test

At an intersection, the $y$-values are equal, so $f(a)=b$ and $g(a)=b$, which means $f(a)=g(a)$.

At an intersection, the slopes are equal, so $f(a)=g(a)$.

At an intersection, the $x$-coordinate $a$ equals the $y$-coordinate $b$, so $f(a)=g(a)$.

At an intersection, the $x$-values are equal, so $f(x)=g(x)$ for all $x$.