Questiond a $y$-intercept of -0.75 and a gradient of 0.75 (e) a $y$-intercept of -2 and a gradient of 0 f a gradient of 0 and a $y$-intercept of 4 . 5 Find the equation (in the form $a x+b y=c$ ) of a line which has: a a gradient of $-\frac{3}{2}$ and a $y$-intercept at $(0,-0.5)$ b a $y$-intercept of 2 and a gradient of $-\frac{3}{4}$ c a $y$-intercept of -3 and a gradient of $\frac{4}{8}$.