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Scatterplots and lines of best fit

Question 1 of 3

Know the idea

The scatterplot shows the relationship between two variables,

x

and

y

. A line of best fit is also shown.The line of best fit passes through

(0, 1)

and has a slope of

0.5

. Based on the line of best fit, what is the predicted value of

y

when

x = 14

Worked example

The line is

y = 0.5x + 1

. At

x = 14

y = 0.5(14) + 1 = 8

Video walkthrough

Use the existing worked examples and practice while this walkthrough is being prepared.

The scatterplot shows the relationship between two variables,

x

and

y

. A line of best fit is also shown.The line of best fit passes through

(0, 3)

and has a slope of

1

. Based on the line of best fit, what is the predicted value of

y

when

x = 12