remember that you will have the x-intercept when y is zero
and y-intercept when x is zero. applying that concept you'll have:
x-intercept (y=0)
-2x + y = 6
-2x + 0 = 6
-2x = 6
x = -3
for x-intercept you will have the coordinates of the point as (-3,0)
y-intercept (x=0)
-2x + y = 6
-2(0) + y = 6
y = 6
for y-intercept you will have the coordinates of the point as (0,6)
plot the points on the cartesian coordinate plane