ANSWER:
Kiara's error is to say that the slope is 28 when the equation does not have that form y = mx + b
STEP-BY-STEP EXPLANATION:
The form of the equation in the slope and y-intercept form is as follows
[tex]\begin{gathered} y=mx+b \\ \text{where m is the slope and b is }y-\text{intercept} \end{gathered}[/tex]The value that accompanies x is the value of the slope, but if and only if the equation is in this form.