Question

Solve the simultaneous equations
y = −3x + 2
y = 2x2 − 7x − 4

I think the way its set out is confusing me?

Answer 1

the second one is y=2x^

Answer 2

y = -3x + 2

substitute into the second equation

-3x +2 = 2x^2 - 7x - 4

2x^2 + 3x - 7x - 2 - 4 = 0
2x^2 - 4x - 6 = 0
x^2 - 2x - 3 = 0
(x-3)(x+1) = 0

x = 3
x = -1

Answer 3

i think you can solve for y on your own?

Answer 4

so in the first it ends with x=3, y=-1?

Answer 5

ah no worries I’ve got it you’ve given the x for both now to solve the y
cheers