I think the answer is C (the number of downloads of a hit song compared with the number of days since it's release). In my opinion, the next-closest answer, A, is not correct because the temperatures during the day can change a little unpredictably.
For a line to be perpendicular, their slopes must be reciprocals. So, a line perpendicular to y=2x+8 is y= -1/2 x +8
Answer:
-9x + y = 43
Step-by-step explanation:
We can put the equation into y = mx + b form first, then change it to Ax + By = C
First, we can find the slope by doing rise/run (y2 - y1) / (x2 - x1)
(-2 - 7) / (-5 + 4)
-9/-1 = 9
We can put this into the equation y = mx + b, along with another point, to find b:
y = mx + b
7 = 9(-4) + b
7 = -36 + b
43 = b
Now, we know the equation will be y = 9x + 43, and we can rearrange this:
Subtract 9x from both sides:
-9x + y = 43 will be the equation of the line
Given the length of the pencil, the length of the marker is 130.8 millimeters.
<h3>What are percentages?</h3>
Percentage can be described as a fraction of an amount expressed as a number out of hundred. Percentages are represented %.
<h3>How long is the marker?</h3>
Length of the marker = (1 + percentage) x length of the pencil
(1.09) x 120 = 130.8 millimeters
To learn more about percentages, please check: brainly.com/question/25764815
Answer:
7.5mph
Step-by-step explanation:
Speed = Distance / Time
Speed = 15 ÷ 2
Speed = 7.5 mph