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(a) The gradient of y=3x+7 is 3 and rearrange 2y–6x=8 to y=3x+4 to show the gradient of 2y–6x=8 is also(6÷2=) 3. Alternatively, choose a value for x and find y value for both lines (e.g. (0, 7) and (0, 4)...
When answering this type of question, it is often easiest to break working out down into two big chunks, to keep everything organised. Chunk One - Expanding and Simpli...
First draw the triangle for visual representation, it can often clear the problem in your head if its too difficult to visualise. Then write sohcahtoa and decide which function to use by highlight the val...
The product of the inside (3 and 5) and the product of the outside (2X+1 and 9) are equal to each other. Therefore 18X+9 = 15. Therefore 18X =6 and if we divide both sides by 18, we get X=1/3.
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