If a = -12/5, then 5x + 2y = 6 and 3x - ay = 4 are parallel.

5x  +2y =6

Add -2y to both sides

5x=−2y+6

‌Divide both sides by 5

x=‌−2/5‌y +‌ 6/5‌

that into the second equation:


3(‌−2/5‌y+‌6/5‌)+‌12/5‌y =4

simplify

‌6/5‌y+‌18/5‌ =4

Add (-18)/5 to both sides

‌6/5‌y=‌2/5

divide both sides by 6/5

y = 1/3

substitute 1/3 for y in x = -2/5y +6/5 to solve for x

x = -2/5(1/3) +6/5

x = 16/15

so x = 16/15 and y = 1/3
 now replace both x and Y in each of the original equations to check the answers:

5(16/15) +2(1/3) =  5 1/3 + 2/3 = 6  true

3(16/15) - -12/5(1/3) = 4 true
 so they are parallel
 

The academic affairs council is the highest expert body processing academic affairs, as stipulated by the university statutes. specialist aaro häkkinen (educational policy) took part in the council’s meeting. the agenda of the meeting included bachelors’ feedback, the timing of pedagogical studies, the grant system for tuition fees, the standardisation of administrative practices for internships and the situation of foreign-language and multilingual master’s programmes.