Question Part (a)
Marking step 1
Description of marks: Find the values of \(a\) for unique solutions
[1 mark for rearranging the equations to gradient form correctly]
[1 mark for showing gradients have to be different]
[1 mark for getting the correct values of a]
Option type: Multiple (checkboxes)
Marking prompt : Which of the following calculations did you perform?
Options:
- I converted both equations into gradient form.
- I made the gradients of both equations not equal to each other.
- I solved for \(a\) and got \(a\ \ne3\) and \(a\ne-5\), with my answer being \(a\in R\backslash\left\{-5,\ 3\right\}\).
Worked solution: