It must have the same slope as the given line, so
m = -A/B = -1/-2 = 1/2
So far, we have
y = mx + b = x/2 + b
Use the given point to find b.
4 = -2/2 + b = -1 + b
b = 5
y = x/2 + 5
Multiply through by 2.
2y = x + 10
Standard form:
x - 2y = -10
TO get the decimal 8 is obviously 8.0 and for 21/40 just divide 40 for both the numerator and denominator. Then add the 8.0 with the answer you get for 40 together to get the final answer.
Figure out the number of days she is trying to collect and then divide by the numbers in a week (7)
The answer is 1,097.8 which is closest to about 1,100 miles.
Let length of original garden be x m. Then:-
(x + 7)^2 = 169
x + 7 = 13
x = 13-7 = 6m
Answer 6 m.