189k views
0 votes
A line passes through the points (-4,-1) and (4,3) a second line passes through the points (-2,-2) and (2,6) at what point do the two lines intersect

User R K
by
3.4k points

2 Answers

9 votes

Answer:10

Explanation:

User Bruno Martinez
by
3.4k points
6 votes

The point of intersection of the two lines is (-1,0)

To obtain the point of intersection, we solve the equation of lines simultaneously.

The equation of line A

m = 3 - ( -1)/4- ( -4)

m = 4/8

m = 1/2

y - (-1) = 1/2( x - (-4)

y + 1 = 1/2( x + 4)

y + 1 = 1/2(x) + 2

y = 1/2x + 1

2y = x + 1

The equation of line B

slope = 6-(-2)/2-(-2)

= 8/4

= 2

y - (-2) = 2( x - (-2))

y + 2 = 2x + 4

y = 2x + 2

Solving the equations simultaneously, substitute 2x + 2 for y

2(2x + 2) = x + 1

4x + 4 = x + 1

3x = -3

x = -1

y = 2(-1) + 2

y = -2+2 = 0

Therefore, the point of intersection is ( -1,0)

User Harshavardhana
by
3.4k points