Answer:
Line1: y = -2 * x + 1
line2: y = 2 * x + 1
Step-by-step explanation:
y = mx + b
y interception (b) for line1 and line2 are 1
slope of line1 (m1) = (y-y') / (x-x') = (3-1) / (-1-0) = -2
slope of line2 (m2) = (y-y') / (x-x') = (3-1) / (1-0) = 2
Line1: y = -2 * x + 1
line2: y = 2 * x + 1
Answer:
The rate of markdown it would have to offer is 27.3%.
Step-by-step explanation:
The original price of sofa was, OP = $880.
The new price of sofa is, NP = $640
The change in price is:

The rate of markdown offered by the shopkeeper is:

Thus, the rate of markdown offered by the shopkeeper is 27.3%.
Answer:
x=31
Step-by-step explanation:
Length (L): 4w - 7
width (w): w
Perimeter (P) = 2L + 2w
136 = 2(4w -7) + 2(w)
136 = 8w - 14 + 2w
136 = 10w - 14
150 = 10w
15 = w
Length (L): 4w - 7 = 4(15) - 7 = 60 - 7 = 53
Answer: width=15 m, length=53 m