Question

The scatter plot shows the systolic blood pressure of people of several different ages. The equation represents the linear model for this data.

y = x + 95



According to the model, what is the systolic blood pressure of someone who is 42 years old?



Enter your answer in the box.

_______mm Hg

Answer 1

y = x + 95
y = 42 + 95
y=137 mm Hg

Answer 2

Here, x represents the age in years and y represents the systolic blood pressure

As per the statement:

The scatter plot shows the systolic blood pressure of people of several different ages.

The equation represents the linear model for this data is:

`y=x+95` .....[1]

We have to find the systolic blood pressure of someone who is 42 years old.

⇒x = 42 years.

Substitute in [1] we have;

`y = 42+95 = 137` mm Hg

therefore, the systolic blood pressure of someone who is 42 years old. is, 137 mm Hg