As the tangent is a straight line, the equation of the ... of P to find the value of \(c\) in the equation. Find the equation of the tangent to the circle \(x^2 + y^2 = 25 \) at the point (3 ...

It also covers the influence of constant terms and coefficients on the graphs of linear equations, emphasizing the usefulness of line graphs in algebra. Keywords mathematical line graph ...

The tangent is perpendicular to the radius which joins the centre of the circle to the point P. As the tangent is a straight line, the equation of the tangent will be of the form \(y = mx + c\).