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To differentiate, multiply the power by the coefficient and then take one off the power so the answer is 12x³ + 12x - 7

Divide the equation by two to get y = 2x - 5This shows that the gradient of the line is 2. Any other equation with the gradient equal to 2 (the x coefficient) when the y coefficient is 1.e.g. y = 2x +12 <...

0.0151515..=x15.151515..=1000x999x=15.1x=15.1/999=1/66

(a) y=mx+c3y=2x-6y=(2x-6)/3(b) y=mx+c9=(2/3)x6+cc=5y=(2/3)x+5

因为+Reason,所以+Result虽然...但是... although不但...而且... not only, but also除了... 以外... 还 apart from, besides