Why is this contradictory to his previous video?

can anyone explain why when y=2x-2 the x intercept is on the right and when y=2x+2 the x intercept is on the left.
Greg didn’t cover this in the previous videos so wanted to understand the reasoning as he plotted it to the right side but here it is being shown the opposite.
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The x-intercept is when y = 0. Just solve for the corresponding x after setting y = 0.

I think you’re just overthinking