Activity 7: Put Me in My Right Place!
Directions: Fill in the blank spaces of the paragraph below with correct word/s or
expression/s which you can choose from the box. Word/s or expression/s in the
box may be used more than once.
add
subtract
elirninate
solution
3
variable
adding
2y + 4
substitute
the equations
(10,3)
10 у
algebraic method. In the elimination method, I can either or
I can solve systems of linear equations in two variables by graphing or by
the two equations to eliminate that variable. When the coefficients of one variable are
When the coefficients of one variable are opposite, I can
equal, I can
I
the equations to eliminate that variable.
to eliminate one
In the system
{ x = 2y +4
+
(x + 3y = 19, equation 1 is already solved for x in terms of
Therefore, by substitution method, we can
for x in the
the expression
other linear equation to find y and the result would be y = _. To find the value of x,
substitute y = 3 in either of the original equations. Hence, the value of x = - To
check whether the ordered pair (10,3) satisfies both equations we must substitute it
to both equations. Since both equations are true after substituting the obtained
values of x and y, this means that coordinate
is a
to the system.​