Answer:
4
Step-by-step explanation:
We know ,
Slope = difference of y co ordinate / difference of x coordinate
=> m = -8+4/-3+2
=> m = -4/-1
=> m = 4
Answer:
number of $20 bill = 4
Number of $5 bill = 5
Step-by-step explanation:
Given that:
Total number of $5 and $20 bills = 9
Let :
Number of $5 bills = x
Number of $20 bills = y
Combined worth of all bills = $105
x + y = 9 - - - (1)
5x + 20y = 105 - - - (2)
From (1)
x = 9 - y
Substitute x = 9 - y into (2)
5(9 - y) + 20y = 105
45 - 5y + 20y = 105
15y = 105 - 45
15y = 60
y = 60/15
y = 4
x = 9 - y
x = 9 - 4 = 5
Hence,
number of $20 bill = 4
Number of $5 bill = 5
2x+y=1
-2x -2x
————
[y=-2x+1]
-4+1(-2x+1)=-1
4-2x+1=-1
-1 -1
———————
3-2x=-1
-3 -3
———————
-2x=-4
—— —
-2 -2
[X=2]
2(2)+y=1
4+y=1
-4 -4
————
[y=-3]
x y
Answer: (2,-3)
Answer:
This is what I worked out
