How to change the way matlab choose to plot given vectors?

I have 2 vectors, for example I`ll show the basic point scattering on a plot

amp1=[4.59200000000000e-05;5.82746666666667e-05;3.73920000000000e-05;2.93013333333333e-05;1.47600000000000e-05]
dc_voltages=[127.300000000000,138,66.4000000000000,78,96.4000000000000]
plot(dc_voltages,amp1,'x')

so I get:

I want to connect those dots such that I will get the picture:

but when I try:

plot(dc_voltages,amp1,'--x')

I get:

I don`t use cftool because I have to fit a lot of similar graphs in the same figure.

Please help

Answer 1

[Star Strider]

Sort ‘dc_voltages’:

[~,idx] = sort(dc_voltages);                                    % Sorts Ascending By Default

figure
plot(dc_voltages(idx),amp1(idx),'--x')

Only the order has changed.