10^4 in expanded form would be 10,000
function 1 :
y = 20x + 15......rate of change (slope) = 20, y int = 15
function 2 :
y = 10x + 25....rate of change (slope) = 10, y int = 25
function 1 has a greater rate of change then function 2
function 2 has a greater y int then function 1
The slope of this line is undefined as it is a vertical line.
Hope this helps.
The distance formula is
D = square root of [ (difference in 'y')² + (difference in 'x')² ]
If the two points are on the same vertical line, the difference in 'x' is zero.
If they're on the same horizontal line, then their difference in 'y' is zero.
Either way, one of the terms in the distance formula is zero. It goes away,
and the distance formula becomes ...
D = square root of [ (difference in one coordinate)² ] .
That's just the square root of something squared, so it's only
D = (difference in one coordinate)
without going through all the squaring and rooting business.