Write down the equation of the line which has:

Question

(a) gradient, m, of 4 and a y intercept, b, of 5.

(b) gradient, m, of -1 and passes through the point (0, -4).

Answer 1

Equation of a line is expressed in y-intercept form as y= mx+ b

So for a) m=4 and b = 5.... The equation would read y=4x+5

b) m=-1 and passing through point (0,-4) the y intercept or b is the point where the line crosses the y axis and x=0 so b= -4... The equation would be y=-x-4.