Question

A(1,3) and C(2,5) are two points. Find the coordinates of the point b, if c is the midpoint of [AB]

Answer 1

A(1,3) and C(2,5)
let the co ordinates of b be(x,y)
(1+x)/2=2
x=3
(3+y)/2=5
y=7

Answer 2

@sophia do u understand

Answer 3

If you see, every time the x value increases by 1, the y increases by 2 Since you know that C is between A & B, and you know the difference is 1 between A & C, you know that the difference between A & B is 2 So add the x value of A with 2
x+2
1+2=3
You also know the conversion rate is x+2=y So substitute the y value
x+2=y
3+2=5
Graph and check :)

Answer 4

This is assuming the graph is a linear equation