Question

a straight line passes through the points A(0,3) and B(3,12). Write down its a) gradient; b) equation
ii) the line x=3 is the axis of symmetry of triangleABC. Find the coordinates of C.

Answer 1

a)=12-3/3-0
=9/3
=3

b) y=mx+b , m=3 , (0,3)
3=3(0)+b
3=0+b
3=b

=> y=3x+3