Answer:
15.8
Step-by-step explanation:

If a line's slope is

, the slope of the perpendicular line is

in this case, the given line has a slope 4, which is 4/1, so the perpendicular line has a slope/gradient
Answer:
ax+b
Step-by-step explanation:
4:1.
56,000÷2 = 28,000
14,000÷2 = 7,000
28,000/7,000 = 28/7
28 ÷ 7 = 4
---- -----
7 ÷7 = 1
4:1
Hope this helps!
Answer:
C
Step-by-step explanation:
D: {-3,0,1,3}
R: {-5,-4,1,5}