If a line with a slope of -2 crosses the y-axis at (0,3), what is the equation of the line? i have no idea how to work this problem

So for this, we will be putting the equation in slope-intercept form, which is , with m = slope and b = y-intercept (aka the point in which the line crosses the y-axis)

Since it's stated that -2 is our slope, this means that -2 is the m variable.

Since it's also stated that the y-intercept is (0,3), 3 is our b variable.

Putting our equation together, it's

answer: d. $20

step-by-step explanation:

just took the test

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.