Question

use graphing to find the real solutions to the system of equations.
{ y= x^2 + 6x+8
{y=x+4

Answer 1

graph them and find the intersection points

Answer 2

Just use substitution.
y = x + 4
x + 4 = x^2 + 6x + 8
0 = x^2 + 5x + 4
factor
(x+1)(x+4)
x = -1
x= -4

Answer 3

so would it be (-4,0) (-1,3)?

Answer 4

y = -1 + 4
y = 3
(-1,3)
y = x^2 + 6x + 8
y = 16 + -24 + 8
y = 0
yes
(-4,0)

Answer 5

that's incorrect sara..
http://www.wolframalpha.com/input/?i=y%3D+x%5E2+%2B+6x%2B8+%2Cy%3Dx%2B4

Answer 6

question is asking you to find them by graphing,
so you better graph and see

Answer 7

thats for y = x^2
not y = x^2 + 6x + 8 @sara12345

Answer 8

check your inputs into the equation.

Answer 9

ive shown u how to graph for an example equations,
i dont wanto feed the answer to the OP

Answer 10

https://www.desmos.com/calculator

Answer 11

you can graph ur equations there
and find the intersecting points

Answer 12

im getting the same graph that sara got.

Answer 13

You shouldn't be.
She put y = x^2
and y = x+2 ...

Answer 14

hey no, you should get a different graph,
in my graph equations are different

Answer 15

go to that site,
and enter ur own equations

Answer 16

ok the one from wolfram is righ

Answer 17

wolfram is not good at graphing,

if u dont have a graphing calculator u can use the online desmos to graph
https://www.desmos.com/calculator

Answer 18

since the question says, use graphing,
you need to knw how to graph stuff, and find intersecting points.