Question

Find the y intercept of the following line (-2,1) and (1, 2.5)

Answer 1

2

Explanation:

(-2 , 1) ; (1, 2.5)

Slope =
`(y_(2)-y_(1))/(x_(2)-x_(1))\\`

`(2.5-1)/(1-[-2])\\\\= (1.5)/(1+2)\\\\=(1.5)/(3)\\\\= 0.5`

m =0.5

y -y1 =m(x -x1)

y - 1 = 0.5(x - [-2])

y - 1 = 0.5(x + 2)

y -1 = 0.5x + 0.5*2

y - 1 =0.5x + 1

y = 0.5x + 1 + 1

y = 0.5x + 2

y-intercept = 2