Question

read the instructions first and answer the questions​

Answer 1

Step-by-step explanation:

I)

1) In the first Graph,

The points are (-2,2);(-3,2);(-5,2);(-2,-2)

the ordinates of the first three points are same ,and last coordinates are same.

2)In the second graph In all points the abscissa and ordinates are same.

3) in the third points The abscissae are -2,-1-,0,1,2 and the ordinates are 8,2,0,2,8

(0,0) is same.

II)

First graph :triangle

Second graph:straight line

Third graph : quadrilateral

if we draw vertical lines through the graph they will touch the graph

so many

III) Each graph represents a function

It has two variables x and y

Ex:-

in second graph x=y

so the function is y=x

Plotting the points in the given graph

Answer 2

Answers :-

Please find the attachment of graph.

$\tt \: Graph \: (a) \: represents \: a \: triangle. \:$

$\tt \red{Graph \: (b) \: represents \: a \: line}$

$\tt \green{Graph \: (c) \: represents \: a \: pentagon}$

$\tt \pink{Yes \: vertical \: line \: touches \: the \: graph}$

$\tt \purple{so \: many \: times \: toches \: the \: graph}$

$\tt \red{No, \: every \: graph \: is \: not \: a \: function} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \tt \: \because \: \pink{If \: a \: vertical \: line \: passes \: through \: two \: points} \\ \tt \pink{on \: the \: graph \: of \: a \: relation, \: it \: is \: NOT \: a  \: function.}$

☆ In the given question, graph (a) and graph (c) are not function as vertical lines passes through two points.

☆ To check whether the given graph is a function or not, just draw vertical lines, If a vertical line passes through two points on the graph of a relation, it is NOT a function, otherwise its a function.

☆ The method is called Vertical Line Test.