2-the following equations are given:
equation #1: 4x + z + y = 8
equation #2: 5y - x = -7
equation #3: 3z + 3x - 2y = 15
equation #4: 4x + 5y - 2z = -3
a. is it possible to solve for any of the variables using only equation #1 and equation #2? explain your answer. if possible, solve for the variables using only equations #1 and #2.
b. is it possible to solve for any of the variables using only equation #1, equation #2, and equation #3? explain your answer. if possible, solve for the variables using only equations #1, #2, and #3.
c. if you found solutions in part b, do these solutions also hold for equation #4?

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!

what is the question here

step-by-step explanation:

2/3

step-by-step explanation:

the slope of a line is equal to the rise/run. in this case the line rises 2 units for every +3 units it moves

the answer i believe is 27 units.

step-by-step explanation: