I don't understand Can you type it again?
Correct answer is option C.(-3,-5) and (3,7)
<u>Step-by-step explanation:</u>
Let us take the value of y from equation y=2x+1 and plugin to the equation y=x2+2x-8
so
2x+1=x2+2x-8
taking constants on left hand side and literals on the right hand side
1+8=x2+2x-2x
9=x2
this implies that value of x=+3,-3
now plug in the value of x in the equation y=2x+1
when x=+3
y=2*3+1 = 7
so (3,7)
when x=-3
y=2*(-3)+1 = -5
so (3,-5)
hence the answer is (-3,-5) and (3,7)
Answer:
x=9
Step-by-step explanation:
3x+9+5x=81
8x+9=81
-9 -9
8x=72
x=9
hope this help!
Answer:
C
Step-by-step explanation:
Everything in choice A is divisible by 2
Everything in choice B is divisible by 3
9 and 16 have no common factors, therefore choice C is your answer.