Question

Arthur is trying to find the equation of a perpendicular to y = 1 over 4x + 4 in slope-intercept form that passes through the point (−2, 6). Which of the following equations will he use?

Answer 1

What are the following equations @imclassylikethat

Answer 2

y − 6 = 1 over 4(x − (−2))
y − (−2) = 1 over 4(x − 6)
y − 6 = −4(x − (−2))
y − (−2) = −4(x − 6)

Answer 3

Ok cool thanks

Answer 4

Hint if the slope of a line is say 2 then the slope of a line perpendicular to it is -1/2

Answer 5

the slope of the line in the question is 1/4 so what about the slope of its perpendicular?

Answer 6

-4/1

Answer 7

@welshfella It will either be y-6=-4(x-(-2)) or y-(-2)=-4(x-6)

Answer 8

you are right about the slope - its -4
to get the full equation use the standard form

y - y1 = m(x - x1)

where m = slope = -4
and x1 anf y1 are the coordinates of the given point
that is x1 = -2 and y1 = 6

Answer 9

So it's y-(-2)=-4(x-6) correct?

Answer 10

no y1 = 6

Answer 11

Okay. thank you. Can you help me with some other problems?

Answer 12

I only have about 10 minutes before i have to go so i can help until then

Answer 13

I need the perimeter of this shape

Answer 14

some lengths can just be read off directly
- those which are vertical or horizontal

Answer 15

but you;ll have to use the pythagoras theorem to find the lengths of of the sloping lines

Answer 16

for example the line SR