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How do you isolate variables for math?
When isolating a variable, you want to get the variable alone on one side of the equation and then what it equals on the other side. Anything you do to one side of the equation, you must do to the other. e.g.3x+2=8First, you subtract 2 from both sides leaving:3x=6Then you divide both sides by 3, and you are left with: x=2
What is the equation of a line passing through 3 4 and having a slope of -5?
(3,4) means that an x value = 3 and a y value = 4, so substitute into y = mx + b to solve for b. 4 = -5(3) +b; so b = 19, now substitute m and b into sane equation leaving x and y as variables. So the equation becomes: y = -5x + 19
What plus -6 equals 12?
To solve the equation "x + (-6) = 12," you need to isolate the variable x by adding 6 to both sides of the equation. This cancels out the -6 on the left side, leaving you with x = 18. Therefore, the value of x that satisfies the equation is 18.
What is the length of XY where X is the point 1-1 and Y is 53 leaving your answer as a surd?
The answer is you can't get it without a variable in the equation. Or with no either x or y.
What does y equal if 2a minus 15 equals -1?
The equation is 2a-15=-1 It is possible to work out what a is (as I am going to show below), but as there is no y in this equation, you cannot work out what y is. We have to firstly try and get rid of the -15, so we add 15 to each side, leaving us with 2a=14. To get a on its own, we divide each side by 2, leaving us with a=14.
