Question

Use the scatter plot and line of best fit to predict the value of y when x equals 1910.

Answer 1

I'll go for 40.

To find the value of y,

draw a line up from the x - axis at 1910,

all the way up to cross the blue line;

then, draw a horizontal line from the point where the recent line meets the blue one.

Now read of the value you get for y.

Hope this helps!