Divide both sides by 64 to find the value of x
6The line of best fit has the equation = -3 + 2.5x. What does this equation predict for a value of x = 3?Answer: 4.5
do you mean, x2 = n?? Take the square root.
True
2x + 6y = 93x - 12y = 15Chose the second equation because you can simplify it.3x - 12y = 15 divide by 3 to both sidesx - 4y = 5 add 4y to both sidesx = 4y + 5Replace 4y + 5 for x to the first equation.2x + 6y = 92(4y + 5) + 6y = 98y + 10 + 6y = 914y = -1y = -1/14x = 4y + 5x = 4(-1/14) + 5x = -2/7 + 5x = -2/7 + 35/7x = 33/7
It depends on which variable you wish to solve for.
Take the square root of both sides of the equation
Divide both sides by 64 to find the value of x
It is not possible, in general to solve one equation in two unknown variables. The best that you can do is rewrite the eqaution so that one variable is defined in terms of the other. xy = x - x2 = x(1 - x) Assuming x not 0 (else the original equation degerates to 0 = 0) we can divide both sides by x to give: y = 1 - x
64x = 37 Divide both sides by 64: x = 37/64 or 0.578125
You cannot go beyond x = k unless you know the value of k. And in that case, the equation is solved so there is nothing further to do!
X2 = k Take square root each side. X = (+/-) sqrt(k) ============
15
true
Which of the following is the best translation of this equation?
6The line of best fit has the equation = -3 + 2.5x. What does this equation predict for a value of x = 3?Answer: 4.5
The best plan for that particular equation would be to first subtract 15 from each side, and then apply the quadratic formula.