A function rule describes how to convert an input value (x) into an output value (y) for a given function. An example of a function rule is f(x) = x^2
10x + 3y = 19
y = 2x + 5
Putting y in the first equation
10x + 3.(2x + 5) = 19
10x + 6x + 15 = 19
16x = 19 - 15
16x = 4
x = 4/16
x = 1/4
Now x in y
y = 2x + 5
y = 2.1/4 + 5
y = 2/4 + 5
y = 1/2 + 5
y = 11/2
Because 7x equals 7x. Its not less than it if it equals it.
Answer:
C. & D
Step-by-step explanation:
This would be the answer since countering the others it's 90 degrees. While the others are able to add up to 180 degrees. :)
