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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

High School Mathematics
1.25 Solve the Equations Using Graphs - II

Example:
Solve x + 3y = 11 and 3x + 4y = 18.

Solution:
Given that, x + 3y = 11 and 3x + 4y = 18.
Write the given equation in y-intercept form.
That is, x + 3y = 11
3y = -x + 11y
y = -x/3 + 11/3.
3x + 4y = 18
4y = -3x + 18y
y= (-3/4)x + 18/4.

Ordered pairs for the graph y = -x/3 + 11/3
x-4-125
y = -x/3 + 11/35432
Ordered pairs(-4,5)(-1,4)(2,3)(5,2)

Ordered pairs for y = (-3/4)x + 18/4.
x-22
y = (-3/4)x + 18/463
Ordered Pairs(-2,6)(2,3)

The straight lines x + 3y = 11 and 3x + 4y = 18 are intersecting at (2,3). Therefore the solution is (2,3).


Directions: Write at least five examples of your own and solve them using graphical method.

Have your essay responses graded by your teacher and enter your score here!

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