Answer:
B. (-1,7)
C. (0,5)
D. (2,3)
Step-by-step explanation:
We solve this question looking at the graphic.
A. (-7, 1)
When
, and thus (7,-1) is not solution of the equation.
B. (-1,7)
When
, and thus (-1,7) is a solution of the equation.
C. (0,5)
When
, and thus (0,5) is a solution of the equation.
D. (2,3)
When
, and thus (2,3) is a solution of the equation.
E. (3, 2)
When
, and thus (3,2) is not part of the solution
F. (5,0)
When
, and thus (5,0) is not part of the solution
The next number would be 6.
The pattern is add 3, then subtract two.
Answer:
16.5
Step-by-step explanation:
Just put in the values of C and y first into the expression.
C = 4x + 5y
Put in values.
51 = 4x + 5(-3)
Evaluate.
51 = 4x + (-15)
Swap positions.
4x + (-15) = 51
Shift (-15) to the other side and change to (+15).
4x = 51 + 15
= 66
Find x.
x = 66 ÷ 4
x = 16.5
Z= 6 because 28/4=7 and 42/6=7