Slope intercept form is $y = mx + b$ . The $y$ -intercept is -1 so we have $y = mx - 1$ . To find $m$ , look at the points $(0, -1)$ and $(4, 0)$ . The line goes up 1 and over 4, so the slope, $m$ , equals $1/4$ . Thus the full equation is

$$y = (1/4)x - 1$ .

4 0

2 years ago

8) Factor each sum or difference of cubes completely. a. 8x3 + 27

ASHA 777 [7]

Answer:

$\large\boxed{(2x+3)(4x^2-6x+9)}$

Step-by-step explanation:

$8=2^3\\\\8x^3=2^3x^3=(2x)^3\\\\27=3^3\\\\8x^3+27=(2x)^3+3^3\qquad\text{use}\ a^3+b^3=(a+b)(a^2-ab+b^2)\\\\=(2x+3)\bigg((2x)^2-(2x)(3)+3^2\bigg)=(2x+3)(4x^2-6x+9)$

4 0

3 years ago

9/15 + 7/15= ? Pls help I’m being dumb :0

Mashutka [201]

I think the answer is 1.06666666667

7 0

3 years ago