Line pass to points: (-5;0) and (0;-5)
So:
\left|\begin{array}{ccc}x&y&1\\-5&0&1\\0&-5&1\end{array}\right|=0\\
\\
25+5y+5x=0\\
\\
5+y+x=0\\ y=-x-5\\
\\
slope=-1 \ \ \(coeficient \ of \ "x")
For each unit of progress toward the right ... as 'x' increases ... the line drops one unit.
Its slope is -1.
To find the slope of a line passing through the points (-5, 0) and (0, -5), we use the formula m = x 2 − x 1 y 2 − y 1 . This gives us a slope of − 1 , indicating that the line descends as it moves from left to right. A slope of − 1 means that for each unit increase in x, y decreases by 1 unit.
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Penjelasan dengan langkah-langkah:(x + 20) / 14 = x / 1010x + 200 = 14x200 = 14x - 10x200 = 4x200/4 = Xx = 50 meterjarak jika dengan kecepatan 14 km/jam adalah 70 meterjarak jika dengan kecepatan 10 km/ jam adalah 50 meter