Aballoon is released from the top of a platform that is 50 meters tall. the balloon rises at the rate of 4 meters per second. write an equation in slope-intercept form that tells the height of the balloon above the ground after a given number of seconds.

Slow intercept form is y = mx + b

y = dependent variable = height of balloon (h)
x = independent variable = time (t)
m = slope = rise of balloon height with respect to time of 4 m/s
b = y-intercept = initial height of 50m

thus, putting it all together, we get . . .

h = (4 m/s)t + (50m)

No a triangle cannot be formed because when you add the two smallest number together (which would be 11) the have to be bigger than the number it is "against" ( which would be 12)