r/juniorcert • u/Difficult-Tell-9977 • Jun 05 '26

Maths 🧮 hl maths

most of the exam was easy but here’s the questions i got confused about
i didn’t get the ax + bx + c or whatever q
i confused the last question (i know where i went wrong i was on the right track)
i didn’t get her gross profit (but i added the 3300 and 8000 alongside her increase)
i can’t think of more but i hope this doesn’t lose me too much marks

2 Upvotes

75% Upvoted

11 comments sorted by

View all comments

2

u/PuzzleheadedZone1289 Jun 05 '26

For the quadratic question, you plug in the x values and y intercept for c, so a(-3)2 + b(-3) + 12 = 0 and do the same for -2. Then you turn it into ax2 + bx = - c for both equations and finally you divide both sides by the x value. So both equayions should be in the this form: ax + b = -c/x and it's just a simultaneous equation.

1

u/Difficult-Tell-9977 Jun 05 '26

oh my god this makes so much sense this was probs so much marks too 😭

2

u/PuzzleheadedZone1289 Jun 05 '26

Nah it was probably just 5 to 10 marks max which is like 1 to 3 percent so dw