To practice catching, the little
league team uses a baseball-
throwing machine. The pathway
of the ball from the machine can
be represented by the equation
h = -16t2 + 48t + 4
What will be the height of the
ball after 2 seconds?

Solution:

The pathway  of the ball from the machine can  be represented by the equation:

To find: height of the  ball after 2 seconds

Substitute t = 2 in above equation

Thus the height of the  ball after 2 seconds is 36 units

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.