Answer:
Using the equation ŷ = 5.4 + 1.7x, we can say that if x is 1.2, the predicted value will be 7.44.
Step-by-step explanation:
y=5.4+1.7(1.2)
Multiply 1.7 and 1.2 to get 2.04.
y=5.4+2.04
Add 5.4 and 2.04 to get 7.44.
y=7.44
There you go!
(Sources cited from Microsoft Math Solver.)
Answer:
x+y < 28
Step-by-step explanation:
1. Look at your variables: x is the first number and y is the second.
2. Know the limits: It says it has to be NO MORE than 28, so the inequality has to be less than (<) 28. And it says that the SUM of 2 numbers (in this case x and y), is no more than 28, so you know there's some addition between the two.
3. Write out your inequality: x+y < 28
If 
is the mass of the envelope and 
the mass of one bookmark, then
We have
Then
so the envelope has a mass of 27 grams.
The y-intercept of the line is (0, 12/7).
In the slope-intercept form, y = mx + b:
m = slope
b = y-intercept
The y-intercept is the point on the line where it crosses the y-axis, and has coordinates of (0, b). It is also the value of y when x = 0.
In the slope-intercept form, the value of b is the y-coordinate of the y-intercept, (0, b).
Therefore, the y-intercept = (0, 12/7).
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