Question

f (x) = -2x - 1
For the function above, find the Y-intercept, the X-intercept, and the slope.

Answer 1

Answer:

Step-by-step explanation:

y-intercept = - 1

x-intercept = - 1/2

slope = - 2

Answer 2

Answer:

-1 is the y - intercept.

The x - intercept is $\frac{-1}{2}$

The slope of line is -2.

Step-by-step explanation:

Given f(x) = - 2x - 1

Let y = - 2x - 1

To find the y - intercept, put x = 0

=> y = - 2*0 - 1

    y = -1

Therefore, -1 is the y - intercept.

To find the x - intercept, put y = 0

=> 0 = - 2x - 1

=> 2x = - 1

=> x = -1/2

Therefore, the x - intercept is $\frac{-1}{2}$

We know that the equation of line is  y = mx + c

Comparing this with the equation of line => y = -2x - 1

We have Slope = m = -2

Therefore, the slope of line is -2.

Answer 3

Answer:

-1 is the y - intercept.

The x - intercept is $\frac{-1}{2}$

The slope of line is -2.

Step-by-step explanation:

Given f(x) = - 2x - 1

Let y = - 2x - 1

To find the y - intercept, put x = 0

=> y = - 2*0 - 1

    y = -1

Therefore, -1 is the y - intercept.

To find the x - intercept, put y = 0

=> 0 = - 2x - 1

=> 2x = - 1

=> x = -1/2

Therefore, the x - intercept is $\frac{-1}{2}$

We know that the equation of line is  y = mx + c

Comparing this with the equation of line => y = -2x - 1

We have Slope = m = -2

Therefore, the slope of line is -2.