Audrey's Algebra Explanations
| -6x+9=4(5-x) 1. multiply the
4 by all of the numbers in
-6x+9=20-4x the paranthesis to get the 20-4x. -9= -9 2. subtract the nine from both sides. -6x=11-4x +4x= +4x 3. add the 4x from both sides -2x=11 4. now the 'x' is on one side and the 11 is on the opposite side of the equal sign. -2x=11 5. divide both sides by -2 to cancel out the 2 -2 = -2 and leave the x by itself. x= -5.5 6. after you have divided by -2 to both sides you will get the answer in x= -5.5 form |
| A=1/2(b1+b2)h
1.) I am trying find out what b1 equals
2A=(b1+b2)h 2.) multiply both sides by 2 2A/h=(b1+b2) 3.) divide both sides by h 2A/h-b2=b1 4.) subtract b2 from both sides |
| with slope = -2 through
(4,6)
y-6= -2(x-4) 1.) to put this in point slope form change the put the y and x with their appropriate points, and put the slope in front of the x y-6= -2x+8 2.) now i am going to change this equation to slope intercept form to this i must first distribute the -2 appropriatley +6 +6 3.) next i must cancel out the 6 behind the y y= -2x+14 <----- slope intercept 4.) i am now going to change this to standard form to do this i must first get both the x and the y on both sides of the equal sign 2x+y=14 5.) to do this just add the -2x to both sides know have both the variables on the same side. you are now finished :)
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