Question

HElp PLease

Answer 1

same as before, rearrange the formula to make y the subject.

Answer 2

then use the formula: m_1 x m_2 = -1 to find the slope of the perpendicular line.
Then substitute it into the equation:
\[y-y_1=m(x-x_1)\]
and get y by itself

Answer 3

y=-2x+5??

Answer 4

the gradient should be 2, not -2

Answer 5

and the y intercept should be 10, not 5

Answer 6

\[2x+4y=20\]\[4y=-2x+20\]\[y=-\frac{ 1 }{ 2 }x+5\]
so m = 2, then
\[y-y_1=m(x-x_1)\]\[y-4=2(x+3)\]
Solve from here

Answer 7

thanks for ur
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