Answer:
(2,-6) and (4,-16)
Step-by-step explanation:
-5x+4 crosses these points
Answer:
4
Step-by-step explanation:
See the image below:)
Answer:
-276
Step-by-step explanation:
We'll use the method of cofactors. Use the coefficient +6 for
9 2
8 10
This gives you one third of the solution: 6 {(9)·(10) - (8)(2) }, or 444.
Next, use the coefficient 9, taking care to change the sign to -9 as follows:
9 1
-9 | | = -9(90 - 8) = -9(82) = -738
8 10
Finally with +2 as y our coefficient, evaluate the cofactor
9 1
9 2
ending up with
+2(18-9) = +2(9) = 18
Finally add these three results together:
+444 - 738 + 18 = -276
This, the determinant, D, is -276 (the fourth answer choice)
(0,7) and (3,1) are points on the line.
Slope of line passing through (x₁, y₁) and (x₂, y₂) = (y₂-y₁)/(x₂-x₁)
Slope of line passing through (0, 7) and (3, 1) = (1-7)/(3-0) = -2
2x + y = 17
To solve for y, subtract 2x from both sides;
y = 17 - 2xTo solve for x, subtract y from both sides;
2x = 17 - y
Divide both sides by 2;
