Challenge Question · Gamify SAT

Challenge Question

Hey Guys, I am back after a long time just relaxing and trying to find a workable strategy to attack the Reading and Writing Section with. But I got a challenging math question for you guys, it will be rated hard by the College Board, because they like to use the ways to do a math question by hand, but I assume that this question is where Desmos becomes a game changer, because you can solve it in seconds by Desmos.

Here it is:

Line j is defined by (2,26) and (7,78). The equation of this line is Ax+28y=C. Find the value of A+C.

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I want to see how many of you guys get this answer using Desmos, and how many know how to do it by hand, i will reveal the answer by tomorrow, but I can give a hint: the answer should be negative.

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