exam
Maths Puzzle
Numerical Ability
The equation of the line through (8,6) and (2,-4) is?
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exam Other Question
How do I find the line of symmetry for the graph of this function?
y = 1(-4 - h)² + -5
( The problem is not found in my textbook)
solve by graph:
x + y = 3
x + y = -1
2x + y = 4
x + y = 3
solve by addition
x + y = 2
x - y = 2
solve by substitution
x - y = 12
y = 2x
solve by substitution
3x - y = -7
x + y = 9