Question: how to find the slope and y intercept of y-3=0?
Answer: We begin by isolating the y variable which puts the equation in slope_intercept form y=mx+b where. m= slope. ...  y−3=0. y=3. This equation is is actually y=0x+3. The slope of this equation is m=0. The graph of this line is a horizontal line through y=3. A horizontal line has no rise and therefore the slope is zero.