Variables x and y related by an unconventional type of equation
The variables x and y are related by the equation . When the graph of against is drawn, a straight line is obtained which has a gradient of -5 and passes through the point (-2, 18).
The variables x and y are related by the equation . When the graph of against is drawn, a straight line is obtained which has a gradient of -5 and passes through the point (-2, 18).
Find the value of m and n.
We need to get an expression involving , so let's divide both sides by :
So when we plot the graph of against , the gradient is . So:
and if we plug this and the values into the equation, we get: