Basically, you have to find the line through (-3, 1) that is perpendicular to the line 6x + y = 9 and then find where the two lines intersect. Dropping a perpendicular from the point to the line is the shortest distance from the point to the line.
6x + y = 9
y = -6x + 9
slope is -6
perpendicular would have slope 1/6
(y - 1) = (1/6) (x + 3)
y - 1 = (1/6) x + (1/2)
multiplying both sides by 6
6y - 6 = x + 3
x - 6y = -9
Where do these two lines intersect?
From above we know given equation is y = -6x + 9
Plugging into other equation
x - 6(-6x + 9) = -9
x + 36x - 54 = -9
37 x = 45
x = 45/37
y = -6(45/37) + 9
y = -270/37 + (333/37)
y = 63/37
point is (45/37, 63/37)
Answer:
The answer is 480
Step-by-step explanation:
Answer:
5 5/7 km
Step-by-step explanation:
We assume the length of thread is proportional to the number of boxes of shirts. If L is the thread length required, then that assumption means
... L/(6 boxes) = (3 1/3 km)/(3 1/2 boxes)
Multiplying the equation by (6 boxes), we get
... L = (3 1/3 km)(6/(3 1/2)) = (10/3 km)(6/(7/2))
... = (10/3 km)(12/7) = 40/7 km = 5 5/7 km
The first one
y=-2(-2)=4
y=-2(0)=0
Answer: $17.33
Step-by-step explanation:
Original Cost: 57.75
Percentage off: 70%
70% off of 57.75 (57.75 x 0.7 = 40.425. 57.75 - 40.425) = 17.33 (rounded)