discuss a real-life situation where a stright-line graph might be applicable?

Answer 1

I will give three situation in our daily life which isl inear function i.e. can be represented by a straight line graph.
first: if a car moves with constant velosity then the distant= time xvelocity
then s =vt which is straight line graph y =vx
second: if a body moves with constant acceleration a ,then
velcity at any instant = initial velocity + acceleration x time
V= Vo + a t or y = c + ax which is linear function.
third : if we have crtain amount of gas then at constant temperature PressureX Volume= constant (boil law)
P.V =K then logP + logV = log K
y + x =c which is linear function

Answer 2

You may be starting out a new business and are trying to show someone a graph of the expenses vs the income. The income is the # of items sold times the sales price. The expenses consist of two parts, an initial start-up cost and a per item expense.

Answer 3

Driving a car at a constant speed. Plotting distance along the x axis and time along the y axis produces a straight line.

Answer 4

Age. Needs no discussion

Answer 5

Converting degrees Fahrenheit to degrees Celsius.
Converting dollars to Euros. (slope will vary day to day).

Converting feet to meters.