U didnt post a graph...so let me try and explain this line...
y = -3/5x + 1
slope = -3/5....negative slope means ur line is going down (decreasing)
ur y int is 1....that means the line crosses the y axis at (0,1)
ur x int can be found by subbing in 0 for y and solving for x...
0 = -3/5x + 1
3/5x = 1
x = 1 * 5/3
x = 5/3....so ur x int is (5/3,0)....5/3 = 1 2/3 for graphing purposes
so start at (0,1).....and since ur slope is -3/5, go down 3 spaces and to the right 5 spaces....ur line will cross the x axis at (5/3,0)
12 is 60 percent of what number?
12 is 60% of 20
The factoring: (x+2) (x+3) (x-3)
zeros: x=-2,-3,3
Answer:
m=84
r:m = 1:7
therefore when r= 1 then M=14

I think that's how you do it