Answer:
The value of a is 9 and b is -8
Step-by-step explanation:
We need to find two numbers that add up or subtract off to 1.
Then we also use the same two numbers that multiply and get -72.
Let's see:-
Because 9+(-8) is 9-8 = 1
And 9(-8) is -72.
Therefore:
The value of a is 9 and the value of b is -8 according to form of (x+a)(x+b)
Given:
Consider the below figure attached with this question.
The table represents a proportional relationship.
To find:
The missing value from the table.
Solution:
If y is proportional to x, then
...(i)
Where, k is a constant of proportionality.
The relationship passes through the point (-3,-1). Substituting in (i), we get
Putting in (i), we get
...(ii)
We need to find the y-value for .
Substituting in (ii), we get
Therefore, the missing value in the table is -4. Hence, option D is correct.
