1.
Use the graph to solve the simultaneous equations.
x + y = 7
2x – y = –1
b) х = 3, у = 5;
c) х =
2, у = 5;
d) х
= 2, у
= 4.
2. Use the graph to solve the simultaneous
equations.
2x + y = 8
x + y = 5
b) х = 4, у = 2;
c) х =
3, у = 1;
d) х = 2, у = 3.
3.
Use the graph to solve the simultaneous equations.
x + y = 5
x – y = –5
b) х = 0, у = 5;
c) х =
5, у = 0;
d) х = 0, у = 4.
4.
Use the graph to solve the simultaneous equations.
2x + y = 8
x – y = –5
b) х = 2, у = 6;
c) х =
1, у = 4;
d) х = 1, у = 6.
5.
Draw x and y axes from 0
to 9. Use the cover-up method to draw the line
3x + 4y = 24.
Use the cover-up
method to draw the line
3x + 2y = 18.
Write down the
solutions of the simultaneous equations
3x + 4y = 24
3x + 2y = 18.
а) х =
4, у = 3;
b) х = 2, у = 3;
c) х =
4, у = 2;
d) х = 3, у = 4.
6. Draw x and y axes from 0
to 6. Draw the lines x + y = 6 and y = x + 3. Solve the simultaneous equations
x + y = 6
y = x + 3.
а) х =
41/2, у = 11/2;
b) х = 11/2, у = 4;
c) х
= 11/2, у
= 41/2;
d) х
= 1, у
= 41/2.
7. Draw x and y axes from 0
to 5. Solve the simultaneous equations
x + y = 5
y = x + 2.
а) х =
1, у = 31/2;
b) х = 11/2, у = 31/2;
c) х = 11/2, у
= 3;
d) х = 31/2, у
= 11/2.
8.
Draw x and y axes from 0
to 13. Solve the simultaneous equations
x + 2y = 11
2x + y = 13.
а) х =
5, у = 1;
b) х =
4, у = 3;
c) х =
3, у = 5;
d) х = 5, у
= 3.
9. Use the graph to solve the simultaneous
equations.
x + y = 11
x + 3y = 13
b) х = 10, у = 1;
c) х =
12, у = 1;
d) х = 1, у = 10.
10. Use the
graph to solve the simultaneous equations.
x + y = 11
2x – y = –2
b) х = 1, у = 8;
c) х =
8, у = 3;
d) х = 3, у = 6.
11. Use the
graph to solve the simultaneous equations.
x + 3y = 13
2x – y = –2
b) х = 2, у = 4;
c) х =
1, у = 3;
d) х = 1, у = 4.
12. Use the
graph to solve the simultaneous equations.
x + y = 5
2y – x = 4
b) х = 1, у = 3;
c) х =
2, у = 3;
d) х = 3, у = 2.
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