Answer:(-3,-6)
Step-by-step explanation:
-4x+y=6
+ -5x-y=21
_________
-9x. = 27
X= 27/-9
X = -3
-4(-3)+y=6
12+y=6
Y=6-12
Y= -6
To check
-4(-3)+(-6)=6 and -5(-3)-(-6)=21
12-6=6. 15+6=21
6=6. 21=21
They check by our answers
Answer:
f(-2) = (3/4)(-2) - 4 = -3/2 - 4 = -1.5 - 4 = -5.5
Step-by-step explanation:
Write f(x) = 3/4 x - 4 as f(x) = (3/4)x - 4 for clarity.
Now substitute -2 for x in f(x) = (3/4)x - 4:
f(-2) = (3/4)(-2) - 4 = -3/2 - 4 = -1.5 - 4 = -5.5
Answer: slope is 7 and y-intercept is 11
Step-by-step explanation:
y = 7 + 5x + 2x + 4
combine like terms
y = 11 + 7x
rearange
y = 7x + 11
slope is 7 and y-intercept is 11
Answer:
(a-2b)/4
Step-by-step explanation:
log 9 (sqrt(f)/g) = 0.5*log 9 (f(x)) - log 9 (g(x))= 0.5*0.5*log 3 f(x) - 0.5*log 3 g(x) = a/4 - b/2=(a-2b)/4