A rollercoaster rises 120 feet into the air before dropping 140 feet. Describe the height of the rollercoaster

a

step-by-step explanation:

u take $30 minus $24. the answer/original($30)

d

step-by-step explanation:

the two points from this line are   (0,4)   & (2,-2)

we can call

now, lets find the slope (m):

now finding b (the y intercept). this is the point at the y-axis where the line cuts the axis. looking at the graph, it is y = 4. so the point is 4. hence b = 4

the slope-intercept form is given by  

putting the points, we have:

d is the correct answer.