1 is A - just plug and chug 2 is B - for 2 linear equations to have infinite solutions they mustbe the same 3 is C 4 is C - that is where they intersect 5 is A - same slope and different intercepts means no solutions
Do you mean the slope of the line or the y-intercept (2002-2001)/(18.75-17.60)= 0.869 =slope y=mx + b -> 2001= 0.869 (17.60) +b -> b= 1985.7= y-intercept