Let us find the slopes of the two lines
ax+by=c, slope m1 = -a/b
bx-ay=c, slope m2 = b/a
m1*m2 = (-a/b)(b/a) = -1
Therefore the two lines are perpendicular so the answer is D
We will calculate this by using ratios and because these two triangles are similar, which is very important.
Explanation:
We see that the FG = 9 corresponds to the VU = 21. Therefore, FH = 18 corresponds to the UW = x.
9 : 21 = 18 : x
x = (21*18)/9
x = 378/9
x = 42.
The correct answer is B. 42.
The mixed number for 4.8 is 4 8/10
For simplest form, divide 8/10 by 2 to get 4/5
Your final answer would be 4 4/5
Choice two point from the graph (look at the picture).
(0, 2) and (3, -2).
The formula of a slope:
Substitute:
Answer: The slope of this line is 
