## starfish33 Group Title A line has a slope of -1 and contains the points (1, 2) and (2, y). The value of y is... Can you show me the steps to solve this... 2 years ago 2 years ago

1. myininaya Group Title

$-1=\frac{y-2}{2-1} => -1=\frac{y-2}{1} =>-1=y-2 => -1+2=y => 1=y$

2. myininaya Group Title

i just used the formula for the slope

3. starfish33 Group Title

thanks