Answer:
(4,12)
(-1,-3)
Step-by-step explanation:
x^2 - y = 4
y = 3x
Use substitution. Substitute 3x for y in the first equation
x^2 - (3x) = 4
x^2 -3x =4
Subtract 4 from each side
x^2 -3x -4 = 4-4
x^2 -3x-4 =0
Factor
(x-4) (x+1) =0
Using the zero product property
x-4 =0 x+1 =0
x=4 x=-1
Now to find y for each x solution
x=4
y =3x = 3(4) =12
(4,12)
x=-1
y =3x = 3(-1) =-3
(-1,-3)
You need to plot the lines
Y= -3x-5 and
Y= -x+3
Answer:
5x^2 - 4x - 1 + 4x^2 + 4
9x^2 - 4x + 3
Step-by-step explanation:
2/4 is greater than 1/8 because if you change 2/4 to a fraction with the same denominator it would be 4/8 and 1/8. So 2/4 is greater than 1/8
It's very hard to work out on here, but your final answer is x=3.
You can substitute x=3 in for x to test it.
Hope this Helps!
Jared
