Answer: First Option
The slope is −0.4. Starting at 3.8, the GPA will decrease by 0.4 for every text sent in class.
Step-by-step explanation:
The equation of a line has the following form
Where m is the slope of the line and b is the intercept with the axis of the y
In this case, the equation is:
Observe that
So if x represents the number of texts sent during classes, this means that 
When x increases by one unit then y decreases -0.4. For example when 
then 
Then the greatest value it can take the GPA is 3.8. Therefore we can say that the function starts at y = 3.8.
The answer is the first option
Answer:
x=2 and y= -3
Step-by-step explanation:
This is a simultaneous equation. To solve this type of equation, there are three methods; substitution, Elimination and Graphical.
But here, we would be using the substitution method.
3x-y=9 Equation 1
2x-y=7. Equation 2
Getting y from equation 2, we have
-y= 7-2x
Multiply both sides by -
y= 2x-7 Equation 3
Substituting y for 2x-7 in equation 1, we have
3x- (2x-7)=9
3x-2x+7=9
x+7=9
x=9-7
x=2
Substituting x as 2 in equation 3
y=2x-7
y= 2(2)-7
y= 4-7
y= -3
Answer:
A, B, D and F.
Step-by-step explanation:
Volume of A = 1/3 pi r^2h = 1/3 pi 3^2 12
= 36pi unit^3.
B also = 36pi.
C = 1/3 pi 6^2 * 6
= 72 pi.
D. = 4 * pi r^2
= 4*9 pi
= 36pi.
E. v = 1/3 * 12pi * 3
= 12pi.
F. = 3 *4 *3pi
= 36pi.
G. V = 1/2 * 3 *4 * 3pi
= 18pi.
