(Solved): a. Determine the value of the constant rate of change of \( y \) with respect to \( x \). (This is ...

a. Determine the value of the constant rate of change of \( y \) with respect to \( x \). (This is a numerical value.) b. Write a formula that expresses \( \Delta y \) in terms of \( \Delta x \). (Hint: enter "Delta" for \( \Delta \).) c. Suppose that \( y=2.5 \) when \( x=1.5 \). Write a formula that expresses \( y \) in terms of \( x \).