Math algebra

Question

find the slope of the line y=7

Answer 1

One way to analyze this is to graph the line y = 7.  It's horizontal.  It's "level," i.e. parallel to the x-axis.  So there is no change in y value from any one point to another. Therefore, according to the definition of slope, any y - any other y will always be zero.  Do you see how that fact allows you to make a conclusion about slope?

Answer 2

So, plot some points, like (0,7) and (5,7), connect them, and see whatcha got. What's the slope of your line?

 

Or, y = mx + b. If there's no x, it's because m = 0.