Question

The points (2,9) and (-4,-9) are on a straight line. Calculate the x and y intercepts.

Answer 1

Slope: (9+9)/(2+4) = 18/6 = 3
Y- intercept:
9 = 3(2) + b
9 = 6 + b
b = 3
X- intercept:
0 = 3x + 3
-3 = 3x
x = -1
x-intercept: (-1,0)
y-intercept: (0,-3)