How do you graph #y= 3/5 x-2# by plotting points?

1 Answer
May 13, 2016

See explanation

Explanation:

2 approaches which really are the same as each other

#color(blue)("Method 1:")# Calculate the intercepts by first substitute #x=0# making note of both coordinates #(x,y)# then substituting #y=0# and again making note of the coordinates and put a mark for each point.

#color(blue)("Method 2:")# Substitute any 2 values you wish into #x# and making note of the coordinates #(x,y)# and put a mark for each point.

Put a rule on the graph paper such that the two points line up and draw your line. Extend this line to the edge of the graph paper squares in both directions.
'................................................................................................

#color(green)("Label your axis and give a title to the graph (gets you extra marks).")#
#color(green)("The title could be on the lines of: Graph of "y=3/2x-2)#

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#color(blue)("Note:")# It is better to have three points as the third serves as a check. All three points should line up. If they don't then something is wrong!

Tony B