Question

Choose the equation of the line passing through the point (-1, 7) and perpendicular to y = -negative one fourthx - 5.

y = -4x - 11

y = -4x - 3

y = 4x + 11

y = 4x + 3

Answer 1

Perpendicular lines have inverse slopes.
what is the inverse of negative one over four? (-1/4)

Answer 2

1/-4?

Answer 3

no. the inverse is the complete opposite for example.
the inverse of +3 is
-(1/3)

so the inverse of -(1/4) is?

Answer 4

+(1/4)?

Answer 5

no.

Answer 6

The inverse of 3 is -1/3
so based of this the inverse of -1/4 is??

Answer 7

the inverse of -1/3 is also 3. btw.

Answer 8

4 oh i get it...

Answer 9

Yes.

Answer 10

Now plug in those coordinates (-1,7) and your slope of 4
into
y=mx + b
and solve for b.

Answer 11

7 = 4(-1) + b

Answer 12

+1 to both sides
7 = 4(-1) + b
+1 +1
8 = 4 + b
-4 -4
4 = b?

Answer 13

No.

Answer 14

4(-1) = 4 x -1 ..

Answer 15

7 = -4 + b
does that help?

Answer 16

yes...
so b = 11?

Answer 17

yes.
know put everything together you have b = 11, m = 4
y = mx + b

Answer 18

y = 4x +11
so its C?

Answer 19

yep