Albert could race 4 times as fast as bernard. for this reason albert could race 48 miles in 3 hours less than it took bernard to race 30 miles. how fast could each of them race? what was the time of a racer?

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )