The slope-intercept form is:
[tex]y = mx+b[/tex]
Where m is the slope, and b is the initial value. We can model the above scenario by:
[tex]y = 2.65x + 2.50[/tex]
So, the answer is D. Remember, that the slope is the value that changes over time and 'b' never changes - it's the initial value and it's constant.
