Question

Identify the correct x intercept and y intercept of the equation x + 7y = -21.

Answer 1

The y intercept is where x=0, you insert that into the equation and see that 7y=-21, therefore y=-3 P(0,-3) is the y intercept.

Same goes for the x intercept. y=0, so x=-21, O(-21, 0) is the x intercept.