Question

What is the y-intercept of the line described by the equation below? y=x-3?

Answer 1

The y-intercept is found when the x-coordinate is equal to zero, so if you plug 0 into the x-variable of the equation, you can find the intercept.

y = x - 3   Plug in 0 for x
y = 0 - 3   Subtract
y = -3       So when x = 0, then y will equal -3. This means that the y intercept of the equation will be C. (0, -3).

Answer 2

The y intercept is the value of y when x is equal to 0, so just set x=0 and find y!

y = 0-3
y=-3

The answer is C: (0,-3)

I hope this helped! ^-^