bluehoratio
New member
- Joined
- Sep 26, 2013
- Messages
- 4
Hi everyone,
I'm taking this college math class for the third time and am seriously close to failing. I'm in my final week and am struggling to re-do homework from last week. I have 69 out of 100 points on one of my modules and if I don't try to get at least 90 % on it, I'm doomed.
Here is the problem:
According to a census, there were 62 people per square mile (this is called the population density) in a certain country in 1980. By 2000, the number of people per square mile had grown to 94. Use this information to develop a linear equation in slope-intercept form. In developing the equation, think of 1980 as year zero.
Let x be the time in years and let y be the population density. Write a linear equation in slope-intercept form to model the given information.
My answer was 8/5x+62, which is wrong. Here is what I did to come to this answer:
X=0, y=62
x=20, y=94
m=94-62/20-0 = 32/20 = 8/5 = 1 3/5 - slope
y intercept is 62 (b=62)
y=8/5x+62
I don't understand this type of math at all and quite honestly, I don't even know if I'm posting this in the right spot. Any help would be appreciated. I could use a lot of help on the rest of my homework. My boyfriend attempted to help me, but was stumped as well. This is one of the least difficult problems I have left to do. I put together the above attempt according to the example directions given for the problem.
Thanks,
Beth
I'm taking this college math class for the third time and am seriously close to failing. I'm in my final week and am struggling to re-do homework from last week. I have 69 out of 100 points on one of my modules and if I don't try to get at least 90 % on it, I'm doomed.
Here is the problem:
According to a census, there were 62 people per square mile (this is called the population density) in a certain country in 1980. By 2000, the number of people per square mile had grown to 94. Use this information to develop a linear equation in slope-intercept form. In developing the equation, think of 1980 as year zero.
Let x be the time in years and let y be the population density. Write a linear equation in slope-intercept form to model the given information.
My answer was 8/5x+62, which is wrong. Here is what I did to come to this answer:
X=0, y=62
x=20, y=94
m=94-62/20-0 = 32/20 = 8/5 = 1 3/5 - slope
y intercept is 62 (b=62)
y=8/5x+62
I don't understand this type of math at all and quite honestly, I don't even know if I'm posting this in the right spot. Any help would be appreciated. I could use a lot of help on the rest of my homework. My boyfriend attempted to help me, but was stumped as well. This is one of the least difficult problems I have left to do. I put together the above attempt according to the example directions given for the problem.
Thanks,
Beth