Find the slope and y-intercept of the line in the given equation

y=9/10x-1

This linear equation is already in slope-intercept form. The slope is the part multiplied by x, so in this case "9/10" and the y-intercept is found when you plug in 0 for x:

y=(9/10)(0)-1 = 0-1=-1 so the y-intercept is -1.