Write an equation in point-slope form of the line through points (7,6) and (9, 2). use (7,6) as the point (x1, y1). a. (y + 6) = −2(x + 7) b. (y + 6) = 2(x + 7) c. (y − 6) = −2(x − 7) d. (y − 6) = 2(x − 7)

Hi there,

The correct answer is C. Because you have to find slope first. The slope formula is Y2-Y1/X2-X1. You plug in as 2-6/9-7 then get -4/2. Finally -2 is your slope. Now you use point slope form equation which is (Y-Y2)=M(X-X2). You plug in as y-6= -2(x-7). Hope you can understand it.

the answer is d. 75%

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.