Question

Which equation represents a linear function?

Equation 1: y = 2x2 + 1
Equation 2: y2 = 3x + 1
Equation 3: y = 5x − 1
Equation 4: y = 4x4 − 1

Answer 1

Linear functions have straight lines.

Answer 2

https://www.desmos.com/calculator/wzwwbydsvo

Answer 3

Which one is straight?

Answer 4

@iGreen but how should I know if they are straight if the answer does not show a graph to let me know?

Answer 5

@iGreen. Nevermind. thank you ☺

Answer 6

@iGreen. it's function 3 :)

Answer 7

Yes, here's a tip, it shouldn't have any exponents in it.

Answer 8

Exponents are those small numbers at the top, if you're wondering.

Answer 9

Thank you. i'll keep that in mind. I know what exponents are haha.

Answer 10

Okay, just making sure..lol some people on here don't.