Question

Which graph is a possible graph of the points (5, -3) and (-5, -3)?

Answer 1

Answer:

To plot a linear equation we just need to plot 2 points and then draw a straight line through the two points.

x

=

−

5

indicates for each and every value of

y

;

x

is equal to

−

5

.

We can choose any two values for

y

to plot two points:

For:

y

=

−

2

;

x

=

−

5

or

(

−

5

,

−

2

)

For:

y

=

2

;

x

=

−

5

or

(

−

5

,

2

)

We can plot these two points as:

graph{((x+5)^2 + (y+2)^2 - 0.025)((x+5)^2 + (y-2)^2 - 0.025) = 0 [-10, 10, -5, 5]}

We can now draw a straight line through the two points:

graph{(x+5)((x+5)^2 + (y+2)^2 - 0.025)((x+5)^2 + (y-2)^2 - 0.025) = 0 [-10, 10, -5, 5]}

x

=

−

5

is a vertical line going through

−

5

on the horizontal axis.