human
Work out the y-intercept of a line from an accurate drawing Use a graphing program (e.g. Desmos) to plot the following pairs of functions.
\[
y=x^{2} - 4 \quad \text { and } \quad y=x-4
\]

Tom says both functions are linear

Katie says both functions cross the \( y \)-axis at the same point

Who is correct? Both Tom and Katie
gpt
Does not know the properties of a linear graph