Got the answer. Don't need a reply, thanks.
Can anyone help me out with this problem? What does it exactly mean by "left hand slope"?
Here's what I've done:
(6939-6653)/10 = 28.6
(7231-6939)/10 = 29.2
29.2 + 28.6 / 2 = 28.9 so this is the slope of the tangent or am I missing something?