4. Determine which ordered pair is not a solution of
y=-5x+4
A.(10,-52)****
B.(7,-39)
C.(-7,31)
D.(8,-44)
I don't how to solve it?
To determine which ordered pair is not a solution of the equation y = -5x + 4, we can substitute the x and y values of each ordered pair into the equation and see if the equation holds true.
A. (10, -52):
Plugging in x = 10 and y = -52 into the equation, we get:
-52 = -5(10) + 4
-52 = -50 + 4
-52 = -46
Since -52 is not equal to -46, the equation does not hold true. Therefore, (10, -52) is not a solution of the equation y = -5x + 4.
B. (7, -39):
Plugging in x = 7 and y = -39 into the equation, we get:
-39 = -5(7) + 4
-39 = -35 + 4
-39 = -31
Since -39 is not equal to -31, the equation does not hold true. Therefore, (7, -39) is not a solution of the equation y = -5x + 4.
C. (-7, 31):
Plugging in x = -7 and y = 31 into the equation, we get:
31 = -5(-7) + 4
31 = 35 + 4
31 = 39
Since 31 is not equal to 39, the equation does not hold true. Therefore, (-7, 31) is not a solution of the equation y = -5x + 4.
D. (8, -44):
Plugging in x = 8 and y = -44 into the equation, we get:
-44 = -5(8) + 4
-44 = -40 + 4
-44 = -36
Since -44 is not equal to -36, the equation does not hold true. Therefore, (8, -44) is not a solution of the equation y = -5x + 4.
Therefore, the ordered pair that is not a solution of the equation y = -5x + 4 is A. (10, -52).
To determine which ordered pair is not a solution of the equation y = -5x + 4, we need to substitute the x and y values of each ordered pair into the given equation and check if the equation holds true.
For ordered pair A: (10, -52)
Substituting x = 10 and y = -52 into the equation: -52 = -5(10) + 4
Simplifying the equation: -52 = -50 + 4
Which is not true, since -52 does not equal -46.
Therefore, ordered pair A (10, -52) is not a solution of the equation.
For ordered pair B: (7, -39)
Substituting x = 7 and y = -39 into the equation: -39 = -5(7) + 4
Simplifying the equation: -39 = -35 + 4
Which is true, since -39 equals -39.
Therefore, ordered pair B (7, -39) is a solution of the equation.
For ordered pair C: (-7, 31)
Substituting x = -7 and y = 31 into the equation: 31 = -5(-7) + 4
Simplifying the equation: 31 = 35 + 4
Which is not true, since 31 does not equal 39.
Therefore, ordered pair C (-7, 31) is not a solution of the equation.
For ordered pair D: (8, -44)
Substituting x = 8 and y = -44 into the equation: -44 = -5(8) + 4
Simplifying the equation: -44 = -40 + 4
Which is true, since -44 equals -44.
Therefore, ordered pair D (8, -44) is a solution of the equation.
Therefore, the ordered pair that is not a solution of the equation is A. (10, -52).
put in each x,y and test the formula: is y= 5x+4
answer A is obviously wrong.