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: 
 Worked solution: