When graphing slope, it is important to remember y= mx+b (slope formula). m is the slope, b is the y- intercept, and x, y are the coordinates. Starting at the y- intercept, graph the slope (rise over run). For the first question, the slope is 1/2. From the y- intercept, move up the y- axis one, and move across the x- axis two. The numerator represents the rise, while the denominator represents the run.
3. 8(3+8)
Explanation : 8x3 = 24 + 8x8 =64 which is congruent to 24 +64
Since the rate is constant, the growth of the height of the helicopter follows a linear pattern. The helicopter has an initial quota of 40ft, so that would be the constant term. The linear terms's coefficient is the rate of growth, so 21 ft/s. So, if is the number of seconds passed from when the observation started, we have
Which means that, if , the height is
False, you want to subtract in order to get rid of the 2x in both equations