What function equation is represented by the graph?

f(x)=−2x−1/2
f(x)=−2x−1
f(x)=−x−2
f(x)=−1/2x−1

B

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 1, 1) and (x₂, y₂ ) = (1, - 3) ← 2 points on the line

m = = = - 2

Note the line crosses the y- axis at (0, - 1) ⇒ c = - 1

y = - 2x - 1 or

f(x) = - 2x - 1

24+x=y

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.