Question

Sam is observing the velocity of a car at different times. After two hours, the velocity of the car is 50 km/h. After six hours, the velocity of the car is 54 km/h.

Part A: Write an equation in two variables in the standard form that can be used to describe the velocity of the car at different times. Show your work and define the variables used. (5 points)

Part B: How can you graph the equation obtained in Part A for the first seven hours? (5 points)

Answer 1

@welshfella

Answer 2

@Nnesha @pooja195

Answer 3

thank you so much @dumbcow for helping me :)

Answer 4

get equation of a line from two points
the 2 points given are:
x = hours
y = mph
(2,50)
(6,54)

m =slope = (54-50)/(6-2) = 4/4 = 1

y = mx + b ----> y = 1x +b
b = y - x = 50 -2 = 48

equation of line is:
y = x + 48

Answer 5

Thank you who about for Part B @dumbcow

Answer 6

*how

Answer 7

@ganeshie8 may you finish part b please?

Answer 8

or @Data_LG2

Answer 9

dumbcow already gave the equation.
All you have to do is find is the velocity of the car after 1hr, 2hr, 3hr, 4hr, 5hr, 6hr and 7hr. The x variable is your time and y is your velocity. Plug the values of x to find the values of y. After you find those values, you can easily graph the data.

Answer 10

for part b ?

Answer 11

yep

Answer 12

wait so i have to graph every sing one i am so confused?

Answer 13

@Data_LG2

Answer 14

like y=1+48 and y=2+48, y=7+48

Answer 15

yes :)

Answer 16

so how would i put this in a paragraph.

Answer 17

I can first start by saying to plug in values for the first seven hours. I will change the x value and replace it with 1, 2, 3, 4, 5, 6, and 7?

Answer 18

Then I could show the equations maybe is thats what it is axing?