Learn how to read x and y coordinates from a graph in this BBC Bitesize maths KS3 guide. BBC Homepage. ... Use the graph to find the value of 𝒚 when 𝒙 = 4. End of image gallery.

The formula bar now looks similar to the following:=SLOPE(A2:A5,B2:B5)Note that the number of y and x values highlighted must be equal. Press "Enter." Excel displays the slope of the line in the ...