What are the slope and y-intercept of this line?

The y intercept is where the graph crosses the vertical y axis. In this case, it's at the point (0,-1). Focus on the y coordinate and we see y = -1. The y intercept is b = -1.

The slope is m = 2 because we start at a point like the y intercept, and do the following steps

and arrive at the point (1,1) which is also on the graph. We can follow these steps again to go from (1,1) to (2,3) and so on.

Alternatively, you can pick two points on the graph such as (1,1) and (2,3) to use the slope formula

m = (y2 - y1)/(x2 - x1)

m = (3-1)/(2-1)

m = 2/1

m = 2

Either way, the slope is 2.

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