This is solving differential equations by sepeartion of variables

solve for y such that
dy+k(y-70)dx=0
and y(1)=140

show the steps
the problem part for me is i'm stuck trying to seperate them and making the y's go with the dy and everything else go with the dx

show all work
show steps, specifically
1. separating and grouping the y's with dy and x with dx (remember that where c is a constant
2. write the c for the constant
3. subsitute the point (0,140) to solve for c
4. solve for y once you know what c is

show work and answer if you know

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15