Asked by Frustrated

find the slope and the y-intercept

f(x) = -4x-9

The slope is
the y-intercept is (0, and ?)
Answered by Dr Russ
All staight line equations are in the form

y=mx+c where m is the gradient and c is the intercept (0,c).

So compare your function with the general equation for a straight line and by inspection you can find m and c.
Answered by Frustrated
I get (0,-13)
Answered by Dr Russ
How did you get that? Say the equation is y=-4x+9

In the form
y=mx+c it is
y=(-4)x+(-9)

so what is m and what is c?


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