Table:
y = x²
can also be written as: f(x) = x²
Plug in each x value and calculate the output:
f(-4) = (-4)² = 16
f(-3) = (-3)² = 9
f(-2) = 4
f(-1) = 1
f(-) =
f(0) = 0
f() =
f(1) = 1
f(2) = 4
f(3) = 9
f(4) = 16
Answers:
a) graph shown in picture
b) vertex is at (0, 0)
The relative speed of the car to the truck while moving towards each other is the sum of the speed of both vehicles.
Reasons:
The distance between the cities, d = 145 miles
The time it takes a truck to cover the distance = 2.5 hours
The speed of the car = 1.5 × Th speed of the truck
Required:
The time it takes them to meet if they are moving towards each other.
Solution:
Therefore;
The speed of the car, = 1.5 × 58 mph = 87 mph
At the time<em>, t</em>, the truck and the car meet, we have;
Which gives;
87 × t + 58 × t = 145
Learn more about distance, time and speed here: