What is 3x+4y=12 solve for y
1 answer:
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Answer:
(a) 3x -y = 7
(b) x +3y = 29
Step-by-step explanation:
(a) The standard form of the given line is ...
3x -y = 5
The parallel line will have a constant on the right that makes it go through (5, 8), so it will be ...
3x -y = 3(5) -(8)
3x -y = 7
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(b) The perpendicular line will have coefficients for x and y swapped and one of them negated. Again, the constant is chosen to make it go through (5, 8).
x + 3y = (5) +3(8)
x + 3y = 29
Answer:
Average speed = 4 mph
Step-by-step explanation:
Given as
Total distance to travel = 6 mile
now, for first 2 mile the avg speed = 6 mph
for next 2 mile the avg speed = 4 mph
and for rest 2 mile the avg speed = 3 mph
so, the average speed of the Richard =
Total Avg speed =
Or, = ×12
= 4
So the total Average speed = 4 mph (Answer)