Solved on Feb 12, 2024

Describe the linear relationship between xx and yy. Write the equation x+12=yx + 12 = y. Find the flower's height after 9 days.

STEP 1

Assumptions
1. The values of xx represent the number of days.
2. The values of yy represent the height of the flower in centimeters.
3. The relationship between xx and yy is linear and can be described by an equation.
4. We are given a table with pairs of xx and yy values.

STEP 2

To describe the relationship in words, observe the table and see how yy changes as xx changes.

STEP 3

By examining the table, we notice that as xx increases, yy also increases. Specifically, when xx increases by 1, yy increases by 1 as well. This suggests a linear relationship with a slope of 1.

STEP 4

To find the specific relationship, we can use any pair of xx and yy values from the table. For example, when x=3x = 3, y=15y = 15.

STEP 5

Using the pair (x=3x = 3, y=15y = 15), we can try to find the equation in the form y=mx+by = mx + b, where mm is the slope and bb is the y-intercept.

STEP 6

We already observed that the slope mm is 1, so we can write the equation as y=x+by = x + b.

STEP 7

Substitute x=3x = 3 and y=15y = 15 into the equation to find bb.
15=3+b15 = 3 + b

STEP 8

Solve for bb.
b=153b = 15 - 3 b=12b = 12

STEP 9

Now that we have the slope and the y-intercept, we can write the equation of the relationship.
y=x+12y = x + 12

STEP 10

We can now use this equation to find the flower's height after 9 days. Let x=9x = 9 and solve for yy.
y=9+12y = 9 + 12

STEP 11

Calculate the value of yy.
y=21y = 21
The flower's height after 9 days was 21 centimeters.

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