well we have different forms of equation of a st.line : =============================== >> if you are given two points then it will be in the form $\frac{ y-y1 }{ y2-y1 } = \frac{ x-x1 }{x2-x1 }$ where the two points are (x1,y1) ^ (x2,y2) >> if you are given the slope and the y-intercept $y=mx+c$ where m is the slope and c is the y-intercept >> if you are given a point and the slope $y-y1=m(x-x1)$ >> AM NOT SURE OF THIS I guess if you are given y-intercept and x-intercept so implicitly we are given two points we can consider it like the case of two given points I recommend you check the last one cuz am not certain about it