Question

Use your equation from #3 and show your work to predict the European size of Shaq O’Neal’s U.S. size of 22.

Here is the equation from question #3~ y=5/2x+26.5

Answer 1

@Directrix can you please help me?

Answer 2

Where is the original problem posted?

I need to see what x and y represent and why the equation has this in it: ~

abbycross167

Answer 3

@abbycross167

Answer 4

here is the graph with the sizes~
U.S size 1 3 5 7 9 11
European size 31 34 36 39 41 44

Answer 5

Equation = y=5/2x+26.5
Plug x=8 into the equation
Y=5/2(8)+26.5
Y= 46.5
m = (y2 – y1) / (x2 – x1)
m = (39-34) / (5-3)
m = 5/2
b=26.5
Equation = y=5/2x+26.5

Answer 6

@Directrix was that what you wanted?

Answer 7

Yes. Thanks. I will check the equation before I do the size conversion.

Answer 8

1 3 5 7 9 11
31 34 36 39 41 44

To get the equation, you used the points (5,39) and (3,34).

They do not match the chart.

5 goes with 36 and (3,34)

Write the equation again using (5,36) and (3,34).

Read the chart of values carefully.

Answer 9

I used points (1,31) and (3,34) to get the equation as:

y = (3/2) x + 59/2

y = (3/2) * 22 + 59/2

y = 62.5 for Shaq's European shoe size

Now, I am worried if numbers in the table are out of order or incorrect.

Maybe you could post a screenshot.

Do check the posted points.I

If the chart is off kilter, then the calculations will be wrong.

@abbycross167

Answer 10

@Directrix could you show me how you got the equation y = (3/2) * 22 + 59/2?
Like show me the steps? please?

Answer 11

Thank you very much btw!!!

Answer 12

The slope of the line, m, is found from two points from the chart: (1,31) and (3,34).
m = (34-31)/(3-1) = 3/2

With slope 3/2 and using selected point (1,31) and the slope-point form of a line,

y - 31 = (3/2)*(x - 1)
y - 31 = (3/2)*x - 3/2
y = (3/2)*x - 3/2 + 31
y = (3/2)*x -3/2 + 62/2
y = (3/2)*x + 59/2

Answer 13

Shaq wears shoe size US of 22.

Replace x by 22 in y = (3/2)*x + 59/2

y = (3/2) * 22 + 59/2 y = 62.5 for Shaq's European shoe size

Answer 14

Ok Awsome!! Thank you so much!!

Answer 15

You are welcome.