Please help I’m useless at plotting graphs and the whole y = mx + c equation.?

Please help I’m useless at plotting graphs and the whole y = mx + c equation.


Which is the gradient, and which is the y intercept.


Given that dT/c = K/M


Where dT = change in temperature


C= concentration of solution (varies- i.e its not constant)


K = boiling point elevation constant


M = molecular mass of solute


Plot a graph of dT/c vs c, extrapolate to zero.

Please help I’m useless at plotting graphs and the whole y = mx + c equation.?
Lots of questions not really pertaining to y =mx + c.





So concentrating on that...what ever number is in the c position is the y intercept. So if the equation reads y = 3/4x + 7, then the y intercept is at (0,7).





Gradient is the same as slope. Rise over Run (I hope you have heard that term). If you have a slope of 3/4 it means that your rise is 3 (so count up 3 units) and the run is 4 (so count to the right 4 spaces). Notice that the slope number is in the "m" position of the equation.





To plot this graph, find your y-intercept (it is at 0,7 remember?) From that point count up 3 spaces and to the right 4 spaces. Make a dot.Join the two dots to make a line. Voila!! You have plotted a line graph.