If a straight line passes through the point x = 12 and y = 4 and also through the point x = 4 and y = 8,the slope of this line is
A)negative 8 divided by 4.
B)seven tenths.
C)negative one half.
D)one -and one half.

Question

Quizplus · Accepted Answer

The slope of a line passing through two points (x1,y1) and (x2,y2) can be found using the formula:
slope = (y2-y1)/(x2-x1)

Using the given points (12,4) and (4,8), we get:
slope = (8-4)/(4-12) = -4/(-8) = 1/2
But we need to find the negative slope since the line is going downwards from left to right. Therefore, the slope is -1/2.

So the answer is C) negative one half.

If a Straight Line Passes Through the Point X =