Chapter 1 - Linear Functions - 1.3 Fundamentals of Graphing and Slope - 1.3 Exercises - Page 52: 51

incorrect Slope: $4$ $y$-intercept: $(0,-9)$

$y=4x-9$ The slope is the coefficient of $x$, and the constant term is the $y$ value in the $y$-intercept of $(0,y)$. Slope: $4$ $y$-intercept: $(0,-9)$ The student was not correct. The student switched the $0$ and the $y$ value in the $y$-intercept.