Nathan is playing golf at a golf course. The height of the golf ball from the ground, in feet, x seconds after the ball is hit i
s given by the expression below.
What do the zeros of the expression represent?
A.
the times at which the golf ball is on the ground
B.
the times at which the golf ball reaches the maximum height
C.
the maximum height of the golf ball in the air
D.
the horizontal distance traveled by the golf ball
What do the zeros of the expression represent?
A.
the times at which the golf ball is on the ground
B.
the times at which the golf ball reaches the maximum height
C.
the maximum height of the golf ball in the air
D.
the horizontal distance traveled by the golf ball
1 answer:
Answer:
A. the times at which the golf ball is on the ground
Step-by-step explanation:
The expression of the function is
h(x)= -4x^2+36x
The roots can be seen in the image below
You have a formula which represents the height over time.
The roots of the equation indicate that the height is equal to zero
The correct option is
A. the times at which the golf ball is on the ground
The ball is in the ground at x= 0 and x = 9 seconds
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Answer:
slope1 : 7, slope 2 = 3 solution: (2,5)
Step-by-step explanation:
I simplify some steps
pair 1: x1 0 2
y1 -9 5 ........ -9, y1 intercept
pair 2: x2 0 2
y2 -1 5 ........ -1, y2 interept
2 pairs meet at (2,5)
y=7x-9 ......A
y=3x-1 ......B
A-B 0=4x-8
4x=8
x=2
y=5
slope 1=( y2-y1) / (x2-x1) = (5- -9)/(2-0) = 14/2 =7
slope 2 = (5 - -1) / (2 - 0) = 6/2 = 3
Notice the picture below
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