Astraight line on a graph indicates that there is a relationship between the dependent variable and the independent variable

A straight line on a graph indicates that there is a DIRECT or LINEAR relationship between the dependent variable and the independent variable

Explanation:

As we know that the equation of straight line is given as

here we know that

y = dependent variable

x = independent variable

So here we know that independent variable when directly depends on independent variable then the relation between them is plotted on the graph must be a straight line graph

so correct answer will be

A straight line on a graph indicates that there is a DIRECT or LINEAR relationship between the dependent variable and the independent variable

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

answergravity;