When solved graphically, which system of equations will have exactly one point of intersection?

A) y=2x – 4
2y= 4x – 8

B) y=-x-10
y=-1/2x+10

C) y=-x-1
y = x + 1

D) y= 2/5x+3
y=.4x - 2

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

Find the value of x that will make l ll m

Add the fractions and simplify 1/2+ 1/3