(x+3) (x-3)
Multiply the brackets together
x*x-3*x+3*x+3*-3
x^2-3x+3x-9
x^2-9
Answer : x^2-9
Kg, but if you use grams just convert it over
The third one. I need to add extra characters though so shdmsns
point 1 = ( -1 , 5 ) point 2 = ( 5 , -5 )
equation of a line: y = mx + b
Find Slope (m):
( 5 - (-5)) / (-1 - 5))
= 10 / -6
= -3 / 2
slope = -3/2
Find y-intercept (b):
y = mx + b
y = -3/2 * x + b
5 = -3/2 * -1 + b <-------------- use the x and y coordinate of one of the . points. I used point 1 ( -1 , 5 )
b = 7/2 or 3.5
Assemble:
y = -3/2 * x + 3.5
The answer is C it is the amount of money divided equally between each student
