How do you graph #y= (1/2)x# by plotting points?

Question

Isaiah Anthony · Accepted Answer

So if y=1/2x, then x=2y.

graph{1/2(x) [-10, 10, -5, 5]} It's best to only plot whole numbers because then your line will be perfectly straight. If you plot 2 for x, then plug 2 into the equation: 2=2y. Then solve. y=1. So the first co-ordinate would be (2,1). Just continue that and you'll be good! And it works for any fraction. If your y= equation is already whole, then you're gucci!

Eva Abramson · Answer

Additional tip

Straight line graph is very straight forward. Technically you could calculate just two pints and draw the line through them. This potentially has a problem. Suppose you made a mistake. It is much better to calculate three points. If they all do not line up then you have gone wrong somewhere. #color(blue)("Table of points for plotting")# Three points for #x# picked at random Values for #x color(white)(...........)underline( 1 color(white)(.......) 5color(white)(.....) 10)# Values of # y color(white)(.............) underline(1/2color(white)(.....) 2 1/2color(white)(.....) 5 ) # #<..................(y=1/2x)# Now you plot each one against the other

Julia Adams · Answer

undefined To graph the equation y = (1/2)x by plotting points, you can choose values for x and calculate corresponding values for y using the equation. For example:

When x = 0, y = (1/2)(0) = 0
When x = 2, y = (1/2)(2) = 1
When x = 4, y = (1/2)(4) = 2
When x = -2, y = (1/2)(-2) = -1
When x = -4, y = (1/2)(-4) = -2

Plot these points on a coordinate plane and then connect them to form a straight line.