How do you write the linear function whose x intercept a and y intercept b are given: a= -1 b=-2?
y= -2x - 2
Given x - intercept is a = -1, coordinate of x-intercept is (-1, 0)
and y-intercept is b= -2, coordinate of y-intercept is (0,-2)
Find the gradient of the function,
Hence the gradient is -2.
A linear function has the form : y = mx + c
where m is the gradient and c is a constant.
You found m, but not c.
To find c the constant, substitute m, and a point ( a coordinate) say the x-intercept (-1, 0) into the form y =mx + c,
c = -2
Hence the linear function has the equation y= -2x - 2