When data is displayed with a scatter plot, it is often useful to attempt to represent that data with the equation of a straight line. what is this line called and what is its purpose?
a.
slope, used to determine if a line represents a linear equation
c.
line of best fit, used to represent the linear trend in the data
b.
correlation, used to determine if a line represents a linear equation
d.
quadrant, used to represent the linear trend in the data

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this