y1 = 2x√x y2 = 4 + 6x y=
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Originally Posted by plstevens y1 = 2x√x y2 = 4 + 6x y= The general equation of a line is where m is the gradient and is a known point on the line. In your question, parallel to y2 = 4 + 6x means that m = 6. To get a known point: x-coordinate: Solve for x. y-coordinate: Substitute the value of x found above into .
...parallel to the given line y2. thats the rest of the directions
Originally Posted by plstevens ...parallel to the given line y2. thats the rest of the directions So?? I've already said that means that m = 6. Just to be crystal clear ..... it means that m = 6 in the general equation .
i don't get it so how does this help me to know what y1 is and what y2 is?
Originally Posted by mr fantastic To get a known point: Mr F adds: That is, to get the x-coordinate: Solve for x. y-coordinate: Substitute the value of x found above into . Originally Posted by plstevens i don't get it so how does this help me to know what y1 is and what y2 is? x-coordinate: Solve for x: . So solve : . Now substitute x = 4 into : . So a known point is (4, 16) ........ So and .......
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