Hi, I'm really struggling with this question, any help? A function inputs values for x and outputs values for y. The ordered pairs below represent three points on the graph of the function. (2,4) (3,0) (5,−1)
Is the function linear? Justify your response.

Nope it isn't linear.

Step-by-step explanation:

Use a coordinate plane. The slope is y = -4x+12. if you plug that in, you will get all of the lines correctly

for instance you put 2,4

4 = -4(2)+12

4 = -8+12

that is true

but if you put in (5,-1)

-1 = -4(5)+12, which is not true

if all of them is true, then it would be true.

if even ONE of them is not true, then the who line is not linear

y = 60 ; x = 12

Step-by-step explanation:

The 60° angle and y are equal. Therefore, y = 60.

The parallel lines are equal to each other. You can solve for x by making an equation.

x + 3 = 15

x = 12