How to plot an equation qith specific data range?

Hello

I have a question about a code. I would like to plot an equation in a plot. But I would like to plot a specific data range of the equation.

E.g X values range from 0 to 100. But i would like to depict ONLY the values between 25-80for equation y.

clc
clear

x=0:5:100

y=3*x+10

y1=4*x+5
plot(x,y)
hold on
plot(x,y1)

could you please help me?

Answer 1

[Joseph Cheng]

For this you can use the function ylim()

clc
clear
x=0:5:100;
y=3*x+10;
y1=4*x+5;
plot(x,y)
hold on
plot(x,y1)
ylim([25 80])

[Ivan Mich]

Thank you but I would like to keep in the same plot the values for the another equation (y1 equation) that ranges between 0 to 100.

I would like to plot

y from 25 to 85 x values and

y1 from 0 to 100 x values

How to make it?

[Joseph Cheng]

there are lots of ways but since you are not very clear...................

clc
clear
x=0:5:100;
y=3*x(x>=25&x<=85)+10;
y1=4*x+5;
subplot(211)
plot(x(x>=25&x<=85),y);
hold on
plot(x,y1);
subplot(212)
y=3*x+10;
[ax h1 h2]=plotyy(x,y,x,y1);
 ylim(ax(1),[25 85])