Intersecting Lines (Junior Cert Mathematics): Flashcards

Two lines that cross at a specific point on the Cartesian Plane

Solve simultaneous equations

Remove $x$ or $y$ by adding or subtracting equations

The number in front of a variable

Substituting found variable back to find the other variable

Label the equations

So they cancel out when adding or subtracting equations

Add or subtract the equations

Substitute $y$ back into an original equation to find $x$

Coordinate pair $(x, y)$

Substitute values back into both original equations

Solving equations simultaneously finds the intersection point