Answer: I am going tot give you an example for this because I don’t like giving straight up answers ok?
Step-by-step explanation:
Lets use this conversion factor:
4 inches = 1 year
Let's find the year at 5 feet (60 inches) using the conversion factor. Set up a proportion.
4 / 60 = 1 / x
Cross multiply.
4x = 60
x = 15
At 15 years, the height is 60 inches.
We can use these as points.
x = time in years
y = height in inches
Point 1 = (1, 4)
Point 2 = (15, 60)
By looking at the points, we know that as the x values increase, so does the y values. Now the relation between the x and y values of each point is that y is 4 times as that of x. Therefore, we can establish an equation.
y = 4x
This will be the model to use to find the height in 30 years.
Same need help too has any one answers it fro you. yk
9514 1404 393
Answer:
see below
Step-by-step explanation:
Starting from the point-slope equation ...
y -y1 = m(x -x1)
Solving for y gives ...
y = mx +(y1 -m·x1)
So, the slope-intercept form equation is fairly easily found:
y = mx +b . . . . where m = m, and b = y1-m·x1
This is the equation we have used for 'b' in the attached spreadsheet.
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Of course, the formula for slope is ...
m = (y2 -y1)/(x2 -x1)
This is the equation we have used for 'm' in the attached spreadsheet. For all problems, we have used the first point. (It doesn't matter which point you use if there are two of them.)
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The second attachment is the Google Sheets spreadsheet saved in ODS format. Most spreadsheet programs should be able to open that so you can see the formulas, if you're interested. (The gray values of m are computed using the two points. The unshaded values of m are entered by hand.)
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I'll write a couple of equations in each group so you can see how the spreadsheet numbers relate:
y = mx +b
1. y = 2x -7
3. y = 2/3x +4
8. y = 1/3x -5
9. y = -5/2x +4