How to plot a curve with 3 points?

x= [1.2 1.5 1.9];

y=[5.5e15 9.9e15 7.8e15];

I want to plot a graph like this using the 3 points .How can I do it?

[Image Analyst]

Three points are enough to define a quadratic, but not a Rayleigh-like curve like you're showing. You need more, or else a formula.

[Vanessa Chimedza]

Thank you.

Answer 1

[Voss]

You can plot those three points and connect them with line segments using the plot() function:

x= [1.2 1.5 1.9];
y=[5.5e15 9.9e15 7.8e15];
plot(x,y)

It's not clear how the plot you want is related to those points. Maybe by fitting a curve?

Answer 2

[Matt J]

plot(x,y)

will always plot a curve. Whether you have enough points for the curve to have the intended shape is another question.