$\begin{tabular}{|l|c|c|} \hline \multicolumn{3}{|l|}{Energy per Gram of Typical Macronutrients} \\ \hline Macronutrient & Food calories & Kilojules \\ \hline Protein & 4.0 & 16.7 \\ \hline Fat & 9.0 & 37.7 \\ \hline Carbohydrate & 4.0 & 16.7 \\ \hline \end{tabular}$ The table above gives the typical amounts of energy per gram, expressed in both food calories and kilojules, of the three macronutrients in food. If $x$ food calories is equivalent to $k$ kilojules, of the following, which best represents the relationship between $x$ and $k$ ?
MM
Mashaal Masha
Apr 11, 2024
Energy per Gram of Typical Macronutrients
Macronutrient
Food calories
Kilojules
Protein
4.0
16.7
Fat
9.0
37.7
Carbohydrate
4.0
16.7
The table above gives the typical amounts of energy per gram, expressed in both food calories and kilojules, of the three macronutrients in food. If $x$ food calories is equivalent to $k$ kilojules, of the following, which best represents the relationship between $x$ and $k$?