y = 0 + 3.2t
Part a:
Identify the y-intercept of the regression line and explain what it represents in the context of the data.
Answer:
The y-intercept is zero and it means that in the year 1993 there was no change in the seawater level.
Step-by-step explanation:
See the scatter plot graph attached.
It represents the change in global sea level from 1993-2017, according to the National Aeronautics and Space Administration (NASA).
The equation of the regression line is written below, where Y represents the predicted change in sea level in mm and t represents the years since 1993.
y = 0 + 3.2t .............. (1)
Therefore, the equation is in the slope-intercept form and the y-intercept is zero for this graph.
That means in the year 1993 there was no change in the seawater level. (Answer)
The two numbers in question obtained by creating a system of equations are 56 and 36
Let the two numbers be : a and b
From (2):
Substitute (3) into (1)
a + b = 92
20 + b + b = 92
20 + 2b = 92
2b = 92 - 20
2b = 72
b = 72/2
b = 36
From (3) :
a = 20 + 36
a = 56
Therefore, the two numbers are 56 and 36
Learn more : brainly.com/question/18109354