Question 1029566
Okay, we have an equation for the velocity at any time t...that is
v(t) = 4.2t + 70  (21/5 = 4.2)
so that for t = 10.4, we have
v(10.4) = 4.2(10.4) + 70 = 113.68 ft/sec
The slope IS the acceleration in ft/sec per sec, or ft/sec/sec.
The y-intercept is v(0), the initial velocity when t = 0.