Answer:
The answer to your question is the letter A.
Step-by-step explanation:
a) - c < 0 This option is correct c > 0 but -c < 0 or 7 > 0 and -7 < 0
b) c < -a This option is incorrect. 7 > - (-4) or 7 > 4
c) c < - b This option is incorrect. 7 > - 1
Conclusion
The right answer is the first choice because is the only that satisfies the inequality.
1.
A graph of linear function is a straight line.
Linear function in a slope-intercept form: y = mx + b
Answer: Equation 3: y = 12x + 17.2.
x|-1 | 0 | 1 | ? |
y| 4 | 7 |10| ? |
a slope:

We choose:

subtitute:

a slope-intercept form:

subtitute:

subtitute x = 2 to the equation (*):
Answer: (2, 13)3.
(-2; 7), (-5; 4)
the slope:


check other:

The conclusion: It's a linear function
Answer: It is a linear function because there is a constant rate of change in both the input and output values. 4.
y = 3x + 5 /look at the picture/
Answer: It is a linear function because its graph contains the points (0, 5), (1, 8), (2, 11), which are on a straight line.
check:
sub x=1, a(1)^2 +b(1) + c=0,
a+b+c=0______eqn 1
sub x=-1, a(-1)^2+b(-1)+c=2
a-b+c=2_______eqn 2
sub x=2, a(2)^2+b(2)+c=8
4a+2b+c=8______eqn 3
from eqn 1
c=-a-b
eqn2
a-b-a-b=2
-2b=2
b=-1
eqn3
4a + 2b -a-b=8
3a+b=8
3a+(-1)=8
3a-1=8
3a=9
a=3
c=-a-b
c=-3--1
c=-2
Answer:
the first one is 48 i will have to do more solving for it but when i do i will edit my answer
Step-by-step explanation: