Question

Write an equation of each line that passes through the given points (0, -6) , (3, 9)

1) Y=3x-6
2) Y=-6x+3
3) Y=5x-6
4) Y=-6x+5

Answer 1

Find the slope
y2-y1/ x2-x1

9-(-6)=15
3-0=3

15/3 = 5

5 is the slope
Then you find the y-intercept

Y=mx + b

Y= 5x + b

Substitute one of the points
(0,-6)

-6= 5(0) + b
-6= 0 + b
-6= b

Y= 5x-6