Question

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

x intercept = (3, 0); y intercept = (0, 21)

x intercept = (-3, 0); y intercept = (0, -21)

x intercept = (21, 0); y intercept = (0, 3)

x intercept = (-21, 0); y intercept = (0, -3)

Answer 1

y-intercept -> x = 0.
x-intercept -> y = 0.
Plug in a 0 in for y and see what value you get for x.
Then plug in a 0 for x and see what you get for y.