Everyone should do this derivation, because otherwise the "quadratic formula" is some sort of "magic" LOL...
ax^2+bx+c=0
x^2+bx/a+c/a=0
x^2+bx/a=-c/a
x^2+bx/a+b^2x/(4a^2)=b^2/(4a^2)-c/a
(x+b/(2a))^2=(b^2-4ac)/(4a^2)
x+b/(2a)=±√(b^2-4ac)/(2a)
x=-b/(2a)±√(b^2-4ac)/(2a)
x=(-b±√b^2-4ac)/(2a)
When two lines are parallel they have the same slope
so the slope of the parallel line = the slope of the line in the graph= (Y2-Y1)/(X2-X1) = (5-(-7))/(1-(-2)) = 4
Do you understand?
Hey there!
Explanation:
First, you had to do is add by 13 from both sides of an equation.
Then, simplify or add by the numbers.
Next, you can also divide by 3 from both sides of an equation.
And finally, simplify and divide by the numbers,
*The answer must have a positive sign.*
Hope this helps!
Y ≤ -3x - 23 is your answer.
Answer: looks at the picture
Step-by-step explanation: hope this help :)