How do you find the x and y intercepts for #y = 2x + 18#?
The plot crosses the y-axis when x=0 and it crosses the x-axis when y=0. So by substitution of 0 for one you find the value of the other by manipulation of the equation
If you meant to ask more than just how:
so the y-axis intercept is at
For a strait line graph it is always at the value of the constant.
So at the x-axis intercept
So the x-axis intercept is at