Answer:
1. x = 1, y = -3
2. x = 3, y = 4
Step-by-step explanation:
Here, we want to solve the sets of simultaneous equations;
a) -y = 5x-2
-3y = -5x + 14
substitute 1 into ii
3(5x-2) = -5x + 14
15x - 6 = -5x + 14
15x + 5x = 14 + 6
20x = 20
x = 20/20
x = 1
from;
-y = 5x - 2
y = -5x + 2
y = -5(1) + 2
y = -3
b) -2y = -6x + 10
2y = x + 5
Substitute ii into i
-(x + 5) = -6x + 10
-x - 5 = -6x + 10
-x + 6x = 10 + 5
5x = 15
x = 15/5
x = 3
2y = x + 5
2y = 3 + 5
2y = 8
y = 8/2
y = 4
Answer:
the second one.
Step-by-step explanation:
Answer:
f(-2) = 4
f(0) = 6
f(5) = 11
Step-by-step explanation:
f(x)=x+6 when x = -2
Substitute x=-2
f(-2) = -2+6
f(-2) = 4
f(x)=x+6 when x = 0
Substitute x=0
f(0) = 0+6
f(0) = 6
f(x)=x+6 when x = 5
Substitute x=5
f(5) = 5+6
f(5) = 11
Answer:
43
Step-by-step explanation:
You are going to want to substitute the x of the function f(x) with the function of g(x) and replace the x in g(x) with -4
(f+g)(-4) = 4+3((-4)^2-3)
=43
hope this helped!
Answer:
-3*23
Step-by-step explanation:
