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The formula for perpendicularity is m=-¹/m

So, y-2x=1

y=2x + 1

y = mx +c

By comparison, m = 2

Recall , m=-¹/m

So m= -¹/2

Slope is same as gradient.So the chosen answer is correct

Y-2x=1

4mula for gradient and intercep form is Y=mx+c

Rearrange, y=2x-1

:.m1=2

Remember for penperdicular line the formula is m1m2=-1 or m2=-1/m1

:. the answer is -1/2

Y-2x=1

Rearrange, y=2x-1

:.m1=2

Remember for penperdicular line the formula is m1m2=-1 or m2=-1/m1

:. the answer is -1/2

Formula for slope of a line is y= mx + c. Where m is slope

Y= 2x + 1.

The equation of a perpendicular line must have a slope that is the negative reciprocal of the original slope.

Perpendicular slope = -1/2

Equation of a straight line y=mx+c

Rearranging y-2x=1;

We have y=2x+1:

Comparing with equation of a straight line:

Slope=m=2

THE CORRECT ANSWER IS A

THE CORRECT ANSWER IS (A )

Y=1+2X