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Simultaneous Equations: Quiz 4 - Answers
1) x = 4, y = 18
x = -1, y = 3
2) x = -4, y = 12
x = 1, y = -3
3) x = -1, y = -3
4) x = -4, y = 34
X = -2, y = 14
5) x = 3, y = 11
x = -2, y = 6
6) x = -½, y = -1.5
x = 3 = 16
7) x = -21, y = 5
x = 0, y = 2
8) x = -1, y = 2
x = -2, y = 1
9) x = -3, y = -3
x = 2, y = 12
Simultaneous Equations: Quiz 4 - Answers
1) x = 4, y = 18
x = -1, y = 3
2) x = -4, y = 12
x = 1, y = -3
3) x = -1, y = -3
4) x = -4, y = 34
X = -2, y = 14
5) x = 3, y = 11
x = -2, y = 6
6) x = -½, y = -1.5
x = 3 = 16
7) x = -21, y = 5
x = 0, y = 2
8) x = -1, y = 2
x = -2, y = 1
9) x = -3, y = -3
x = 2, y = 12
Working
Questions
Use the substitution method to find the values of x and y in all of the simultaneous equations below.
Use the substitution method to find the values of x and y in all of the simultaneous equations below.
1) y = x2 + 2
y = 3x + 6
2) y = x2 – 4
y = -3x
3) y = x2 + 4x
y = 2x – 1
4) y = 2x2 + 2x + 10
y = x2 – 4x + 2
5) y = x2 + 2
y – x = 8
6) y – 5x – 1 = 0
y = 2x2 – 2
7) x + 7y = 14
y2 + x = 4
hint: Substitute in for y
8) x2 + y2 = 5
y = x + 3
9) y = x2 + 4x
y = 3x + 6