Question 2389
equation of straight line is y=mx+c, m is the gradient, c is the y-intercept.

so, point(1,2) means x=1, y=2, so y=mx+c becomes...

2 = -3/4(1) + c
2 = -3/4 + c
c=2.75

so equation is y=-0.75x + 2.75


jon