What is the slope of this line?

y = 3x + 4

Step-by-step explanation:

The line passes through points (-3, -5) and (0, 4)

The slope of the line = change in y-axis ÷ change in x-axis

i.e the slope = = = 3

Taking another point (x, y) on the line,

The slope = = 3

Simplifying the equation above gives;

y - 4 = 3x

y = 3x + 4 (equation of the line)

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.