a and b are points on a line that has the slope –3. the abscissa of b exceeds the abscissa of a by 2. state the relationship of the ordinate of b to the ordinate of a.

bearing in mind that abscissa is another name for the x-coordinate and ordinate is another name for the y-coordinate.

let's say we have two points A and B, and their abscissa and ordinate are A(x1,y1) B(x2,y2).

we know that x2 is larger than x1 by 2, namely their difference yields 2, thus x2 - x1 = 2, we also know that the slope of that segment with those two points is -3.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)