OCR Maths B Unofficial Markscheme

Oh okay so so if y = 5x + 3 rearrange to 5x = y +3 if y is -6 then 5x = -3 so -3/5 to get x = -0.6 not 33 I'm failing to understand how everyone's got 33. I solved by making them equal to each other so when you solved the quadratic after making them equal you'd solve for the y values not the x values then substitute in to find X well that's what my teacher said.


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Yeah i got 175 and then something on decimal as well, but 175km is perfectly fine

What did everyone get for the sin and trig triangle question??

I think it was y= 5x -3 not plus
And you put x Into this equation you get 5(-6) -3 which is y= -33 and I did this with the top equation and it gave me the same value. It should have worked if you put it into any equation I think.

I might not be right but I'm guessing that because that's what the majority put it could be the right answer idk

What I did was set both equations equal to each other that gave a quadratic in terms of x when arranged to something like 2x^2+11x+2 or something along them lines however when solving this equation you'd be solving for Y not X even though the equation is written in X you'd be solving for Y as its Y = so on etc. Then you'd use the quadratic equation to find Y and input these values to get X. This how I've been taught either I'm wrong or half of the county has done the mistake a lot of us do -- my teacher will have a copy of the test next week or maybe even tomorrow so I'll ask her to get the answer and I'll put them on here


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