Write down the equation of a line whose gradient is $2$2 and crosses the $y$y-axis at $\left(0,1\right)$(0,1).
Express your answer in gradient-intercept form.
Write the equation of a line which has gradient $\frac{4}{3}$43 and goes through the point $\left(0,-3\right)$(0,−3).
Write an equation for $y$y in terms of $x$x.
Use the table of values below to write an equation for $y$y in terms of $x$x.