Ireally need ! the table below represents the velocity of a car as a function of time. table: time velocity (hour) (miles/hour) x y 0 50 1 52 2 54 3 56 part 1: what is the y-intercept of the function, and what does this tell you about the car? part 2: calculate the average rate of change of the functino represented by the table between x=1 to x=3 hours, and what does the average rate represent? part 3: what would be the domain of the function if the velocity of the car was measured until it reached 60 miles/hour and the car does not change motion? 1

Part 1

The y-intercept is found in the table by looking for the entry where x=0. That is y=50.

Part 2

The average rate of change is the amount of change divided by the width of the interval. From x=1 to 3, that is

... average rate of change = (56 mph - 52 mph)/(3 h - 1 h) = 4/2 mph/h = 2 mph/h

The rate of change in velocity is acceleration. This represents the average acceleration of the car.

Part 3

From the last table entry to 60 mph, the car must increase in speed by 4 mph. We know from part 2 that this change takes 2 hours to accomplish. Adding 2 hours to the last entry in the table brings the x-value to 5. The domain of the function would need to be increased to cover the interval [0, 5] hours.

3 1/3 x 2 3/5 = 8 2/3

step-by-step explanation:

just multiply the first number by the second number to get your answer.

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is