Mathematics
Mathematics, 23.06.2019 01:00, moose5597

Pick to solve the system of equations using the (elimination, substitution) method, i would (multiply equation 1 by -1 and add the equations together, multiply equation 2 by -3 and add the equation together, replace x in equation 1 with -x+15, replace y in equation 1 with -x+15, or multiply equation 2 by -1 and add the equations together) in order to solve for y.


Pick to solve the system of equations using the (elimination, substitution) method, i would (multip

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Mathematics, 29.06.2019 12:20, gonzmari457
Summary of methods to solve systems method equal values this method is most efficient when both equations in form example substitution -2x + one variable is alone on one side of one equation equations in standard form with opposite coeficients. x + 2y = 21 36 27 elimination: add to eliminate one variable. elimination: multiply one equation to eliminate one variable elimination: multiply both equations to eliminate one variable. equations in standard form. to eliminate multiplied to create opposite terms one equation can be 3.6+2y7 when nothing else works. in this case you could multiply the first equation by 3 and the second equation by-2. then add to eliminate the opposite terms. 3x + 2y = 7 problems 1 2x + y = 6 -2x + y = 2 2 -3x+ y0 -6x + 5y = -10 3. 2x - 3y = -9 x -2 4 y-x=4 2y+x=8 5. 2x - y = 4 6. 4x - 4y=14 2x - 4y - 8 7. 6x – 2y = -16 4.x+y=1 8. 6x - y = 4 6x + 3y = -16 9. 2x - 2y = 5 2x - 3y = 3
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Mathematics, 23.08.2019 08:30, vale2652
Substitution and elimination are two symbolic techniques used to solve linear equations. for example, if it is easy to set up an equation for substitution where 1 variable is on 1 side, then use that; for example, 4y=16+4x, you can easily divide by 4, get y=4+x (or y=x+4), and plug that into the other equation. in other cases where it may not be so easy fractions/decimals, etc., then you would probably rather use elimination. 1) the substitution method. this method is best utilized when one of the variables in one of the equations has a coefficient of 1 or -1, otherwise you will introduce fractions. substitution can also be used for nonlinear systems of equations. (2) linear combinations also called the elimination method, multiplication and addition method, my personal favorite as it can be done efficiently. it generalizes well to larger systems and is the underpinning of various other solution methods. as the name implies it requires the equations to be linear. you need to know both and be comfortable switching between them. can we get one for the elimination method too? also, can you solve the same problem using either of the two techniques?
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Mathematics, 10.10.2019 17:30, tbggheemoney
Me plese if a system has exactly one solution it is called consistent inconsistent independent dependent what is the approximate solution of the following system of equations? graph of lines y equals negative x plus 3 and y equals negative one-half x plus 1 (4, -1) (4, 1) (-1, 4) (1, -4) solve the following system of equations by using the substitution method. 2x – 3y = -1 y = x – 1 (3, 4) (2, 3) (4, 3) inconsistent solve the following system of equations by using the substitution method. 3y – 2x = 11 y + 2x = 9 (2, 5) (-2, -5) (4, 5) inconsistent solve the following system of equations by using the elimination method. -2x + 9y = -13 6x – 3y = 15 (1, 3) (4, 5) (2, -1) (-2, -1) solve the following system of equations by using the elimination method. x – y = 11 2x + y = 19 (1, 10) (-1, -1) (12, 2) (10, -1) solve the following system of equations using matrices. 4x + 5y = -7 3x – 6y = 24 (1, 4) (2, -3) (5, 6) (3, 4) solve the following system of equations using matrices. x + y = 1 2x + 5y = 4 (1/3, -2/3) (1/3, 2/3) (2, 1) (-3, 0) the sum of two numbers is 7. four times the first number is one more than 5 times the second. find the two numbers. 2 and 1 4 and 3 5 and 7 2 and 3
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