Question number b is the correct one
Answer:
y = 2x + 1 --> linear
y = -4x + 7 --> non-linear
Not a solution for a linear system.
Step-by-step explanation:
for (a), y = 2x+1, substitute the x and y values. keep in mind, that in a linear pair, (x, y). So, for the first equation you get:
7 = 2x3 + 1. This is correct, because 6 + 1 is 7. Therefore, (a) is linear.
for (b), we have to substitute our values again. You get:
7 = -4x3 + 7, which is
7 = -12+7, which is not true. So, (b) is not linear.
This means that for the linear pair (3, 7), it does not satisfy both equations, which means that it is not a solution for the linear system.
Answer:
C
Step-by-step explanation:
The area (A) of the triangle is calculated using
A = 
ac sinB
with a = 5.04, c = 6.82 and B = 61.73° ← substitute values
A = 0.5 × 5.04 × 6.82 × sin61.73°
= 15.14 units² ( to 2 dec. places )
I believe the answer is P = 2.4
