The middle one is the answer.
The -1 moves the graph down by one unit.
if it was |x-1| that would move it one unit right.
Set up a proportion. 6/10 = 9/x. cross multiply so x times 6 = 6x. And 10 times 9 = 90. so 6x=90. Then 90 and 6x divided by 6. which gets you x=15. The 9 ft tall elephant will cast a 15 ft shadow.
66.6 is the answer for this onel
Answer:
m = - 5/4
Step-by-step explanation:
If two lines are perpendicular, their slopes are negative reciprocals, which means that their product is -1
We can write the equation
4*x - 5*y + 13 = 0
as: 5*y = 4*x + 13 or
y = (4/5)*x + 13 (1)
Equation (1) is the equation of a straight line in its slope point form, 4/5 is the slope, according to this the slope of a perpendicular line is
-5/4
The slope of the line is 
First, you must find 2 points.
(-6,8) (-2,5)
Then, you must substitute the value of the points in.
Finally, simplify the fraction.
