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Andreas93 [3]
2 years ago
7

Need this asap i need to find out which is a function but i get really confused on these things

Mathematics
1 answer:
lyudmila [28]2 years ago
6 0

Answer:

Step-by-step explanation:

Use the "vertical line test."  Draw a vertical line through each graph.  If the line intersects the graph in more than one place, the graph does NOT represent a function.  Only the graph in the upper, right-hand corner represents a function, as a vertical line intersects this graph in only one place.

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Answer:

Step-by-step explanation:

Easiest way would be to substitute points into the given equations and plot your answers.

E.g. if you substitute points into your first equation you get:

If x = 0, y = -4(0) +2 = 2

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If x = -1, y = -4(-1) +2 = 6

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Second equation:

If x = 0, y= -(0) -1 = -1

If x = 1, y = -1 -1 = -2

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Pretty much just plug in values for x into the equations to find y.

Once you have your points, draw a line :)

Where the two lines intercept would be the solution.

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