The Answer is: x1=-4 x2=1.
The first working out is correct, z = 3
Answer:
itd x=68 and y=5 I apolgize if its wrong
The answer i believe is C
Answer:
y=3x
Step-by-step explanation:
y=kx, where k is constant
3y, 1x...so 3y = 1x
check: looking at the graph at 4.5y, 1.5x where y and x intersect...
4.5=3(1.5)
3 x 1.5 = 4.5