Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 3 | A Maths
2 Answers Below
Anyone can contribute an answer, even non-tutors.
Pls helo me find the coordinates of B and D asap thx
Date Posted: 1 year ago
Views: 283
AB line
y = - ⅓ ∙ x - ¹⁷⁄₃
AD line
y = 3 ∙ x + 1
- ⅓ ∙ x - ¹⁷⁄₃ = 3 ∙ x + 1
point A(-2 , -5)
-x-17 = 9x+3
x = -2
y = -5
CD line
y = - ⅓ ∙ x - d
BC line
y = 3 ∙ x + b
3 = - ⅓ ∙ 4 - d
9 = -4 - 3d
d = -¹³⁄₃
3 = 3 ∙ 4 + b
b = -9
CD line
y = - ⅓ ∙ x + ¹³⁄₃
BC line
y = 3 ∙ x - 9
B (1 , -6) → BC line ~ AB line
y = 3 ∙ x - 9
y = - ⅓ ∙ x - ¹⁷⁄₃
- ⅓ ∙ x - ¹⁷⁄₃ = 3 ∙ x - 9
-x-17 = 9x - 27
x = 1
y = -6
D (1 , 4) → CD line ~ AD line
y = 3 ∙ x + 1
y = - ⅓ ∙ x + ¹³⁄₃
- ⅓ ∙ x + ¹³⁄₃ = 3 ∙ x + 1
-x+13 = 9x+3
x = 1
y = 4
y = - ⅓ ∙ x - ¹⁷⁄₃
AD line
y = 3 ∙ x + 1
- ⅓ ∙ x - ¹⁷⁄₃ = 3 ∙ x + 1
point A(-2 , -5)
-x-17 = 9x+3
x = -2
y = -5
CD line
y = - ⅓ ∙ x - d
BC line
y = 3 ∙ x + b
3 = - ⅓ ∙ 4 - d
9 = -4 - 3d
d = -¹³⁄₃
3 = 3 ∙ 4 + b
b = -9
CD line
y = - ⅓ ∙ x + ¹³⁄₃
BC line
y = 3 ∙ x - 9
B (1 , -6) → BC line ~ AB line
y = 3 ∙ x - 9
y = - ⅓ ∙ x - ¹⁷⁄₃
- ⅓ ∙ x - ¹⁷⁄₃ = 3 ∙ x - 9
-x-17 = 9x - 27
x = 1
y = -6
D (1 , 4) → CD line ~ AD line
y = 3 ∙ x + 1
y = - ⅓ ∙ x + ¹³⁄₃
- ⅓ ∙ x + ¹³⁄₃ = 3 ∙ x + 1
-x+13 = 9x+3
x = 1
y = 4
See 2 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hi, I provide 1 to 1 tuition, $30/1.5h, can cover Maths & Sci, ex-school teacher, can produce teaching cert from NIE, WhatsApp 9033 8810 :)
Date Posted:
1 year ago
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hi, Lee. I hope it helps
Date Posted:
1 year ago
360 Tutoring Program