Question

find the x- and y- intercepts of -x + 3y = 9

Answer 1

The y intercept occurs when x = 0
y-intercept = -0 + 3y = 9 so
y = 9/3 = 3 (answer)

x intercept is value of x when y = 0:-
-x + 3(0) = 9
-x = 9
x = 9 (answer)