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12 cards from this deck
Point where two lines meet/cross on coordinate plane
Solution to system of two linear equations
Algebraic (simultaneous eqs) and graphical (plotting)
Exactly one (unique intersection point)
Gives precise/exact results
Visual understanding but limited accuracy
Substitute coordinates into both original equations
ax+by+c=0ax + by + c = 0ax+by+c=0
y=mx+cy = mx + cy=mx+c
Solve one equation for a variable, substitute into other
Make coefficients equal, then add/subtract equations
When parallel (same gradient, different y-intercepts)
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