Question

Which of these coordinates would represent the intercepts of the graph of the function f(x)=3x-9

Answer 1

x y

0 9

1 12

Explanation:

Use the slope-intercept form to find the slope and y-intercept.

Slope:

3

y-intercept:

9

Any line can be graphed using two points. Select two

x

values, and plug them into the equation to find the corresponding

y

values.

Choose

0

to substitute in for

x

to find the ordered pair.

y

=

9

Choose

1

to substitute in for

x

to find the ordered pair.

y

=

12

Create a table of the

x

and

y

values.

x

y

0

9

1

12

Graph the line using the slope and the y-intercept, or the points.

Slope:

3

y-intercept:

9

x

y

0

9

1

12

image of graph

Answer 2

Answer: (0,-8) and (2,0)

Step-by-step explanation: I took the test.