Question

(please help asap I really am lost on this can someone be a lifesaver)
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1). Solve the linear system:
2x+3y = 3
x - 6y = -6

a. (-9, 5)
b. (-6, 3)
c. (-3, 1)
d. (0,1)
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2). Solve the equation: x^2-100 = 0

a. x = 0, 10
b. x = 10, -10
c. x = 0, -10
d. x = 50, -50

Answer 1

@AQ99

Answer 2

Second equation: x = 6y – 6 … substitute into first equation:
2(6y – 6) + 3y =3

Answer 3

1. D

Answer 4

solve for 'y' then slot result in to find' x'.

Answer 5

yh

Answer 6

so the 1st one is D
and the 2nd on solve for y then slot the results in to find x?

Answer 7

for the second question you use a method called completing the square.

Answer 8

basically you factorise.