Question

Consider the following pair of equations:

x + y = −2
y = 2x + 10

If the two equations are graphed, at what point do the lines representing the two equations intersect?

(−4, 2)
(4, 2)
(−2, 4)
(2, 4)

Answer 1

@AnitaS.

Answer 2

@Qwertty123

Answer 3

i think its b

Answer 4

Substitute the second equation into the first to get an expressiin solely in term of x.

Solve the resulting equation to get a value for x.

If you still don't have enough info, take this value, put it into one of the original equations. This will give you a value for y.

Answer 5

is it b

Answer 6

no its A

Answer 7

why

Answer 8

Why do you think it's b?

Alternatively, take each pair of values and substitute them into both equations. Only the pair which evaluates as true for both equations at once can be the answer.

Answer 9

so its a

Answer 10

y=2x+10
x+y=-2
y=-2-x

-2-x=2x+10
0=3x+12
x=-4

y=-2-(-4)
y=-2+4
y=2

(-4,2)

Answer 11

tthnx

Answer 12

welcome :)

Answer 13

welcome :)