Answer:
Step-by-step explanation:
There are a couple of ways to solve this, depending on what you already know.
Point-Slope Form
where <em>m</em> is the slope and 
is a point on the line.
First, calculate the slope using the two given points 
.
.
Fill in the point-slope pattern
There's the equation in slope-intercept form (
).
Slope-Intercept Form
Use directly.
Find the slope just like the above, so 
.
Now, plug one of the points (either one!) together with <em>m</em> into
Now you know the value of <em>b</em>, so the equation for the line is
Answer:
a) x-4+9
b) x-2
For part b, I am not 100% sure about my answer, but I am sure about part a.
Answer:
The histogram for the given data is shown below.
Step-by-step explanation:
In a dot plot, the dots above a point represent the frequency of that number.
From the given dot plot we can make a frequency table as shown below.
Number Frequency
8 0
10 1
12 3
14 3
16 5
18 4
20 2
22 1
24 1
26 0
In histogram, each bar above a number represents the frequency of that number.
The histogram for the given data is shown below.
Answer:
$15.25
Step-by-step explanation:
$7.50+$4.85+$12.25 +$9.00 +$8.15 = $41.75
$28.50*2 = $57.00
So, he needs $57.00- $41.75 = $15.25 more
5 would be the dependent variable because the number 5 depends on how many greeting cards are bought.
