exam
Maths Puzzle
Numerical Ability
A line passing through (6, 9) and (5, y) is parallel to a line with slope 5. What is the value of y?
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My assignment is to solve the system of equations: 3x + 4y+ z = 7, 2y + z = 3, -5x + 3y + 8z = -31
But it seems unsolveable to me. I see no way to eliminate any variables.
What am I missing?
How do I slove x+Y=-1 and 2x-y=-8
The problem says Find the Solution to the system by graphing