exam
Maths Puzzle
Numerical Ability
Solve the system by addition or substitution.
16x – 4y = –12
y = 3 + 4x
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exam Other Question
Construct the equation of a line that goes through the origin and is perpendicular to the given equation.
(a)y = 5
x = ?
(b)x = -7
y = ?
A fuel oil storage depot had an 8 week supply on hand. However, cold weather caused the supply to be used in 6 weeks when 20 000 L extra were used each week. How many liters were used in the original supply???