Answer:
y = -2
Step-by-step explanation:
The line that is perpendicular to y-axis will be a horizontal line so it's slope is 0 => y = 0x + b or y = b
Using (5,-2) => -2 = b => b = -2
then y = -2
Answer:

Step-by-step explanation:


Putting value of eq. 1 in the following:

To find the area of the pools surface you multiply the length times the width of the pool
Area of Flower Bed:
(b*h)/2
(3*8)/2 = 12m^2
Area of Vegetable Patch:
((b1 + b2)*h)/2
((5+7)*10)/2 = 60m^2
Area of Whole Garden:
l*w
14*10 = 140m^2
Whole Garden - Vegetable Patch - Flower Bed = Lawn
140 - 60 - 12 = 68m^2
Area of Lawn: 68m^2
Hope this helps.