Math Help, It's me again?

Question

Find the slope and the y-intercept

f(x) = -4x - 9

The slope is ?

The y-intercept is (0, ?)

Answer 1

Since f(x) = -4x -9 You could compare the equation to y = mx + c m = gradient/slope and c is y-intercept.

By comparing we can safely conclude that slope = -4 and y-intercept = -9 (0,-9)

Answer 2

since y=mx+b in slope intercept form of a fuction, f(x) is another way of stating y, m is the slope, and b is the intercept

the slope then is -4, the intercept is (0,-9).

This is from the defined slope intercept form of a function, and the equation will always tell you those answers if it is in that form.

Answer 3

the slope is the coefficient (number in front of) x

so the slope is -4

the y intercept is the number tacked on at the end

so the y intercept is (0,-9)

the general equation of a line is y=mx+c where m is the slope and c is the y intercept