Graphing With Intercepts!

Graphing With Intercepts!

Multiple Choice

At the x intercept the value of y is _______.

• 1

• 0

• x

• y

Multiple Choice

At the y intercept the value of x is _______________

• x

• y

• 1

• 0

Multiple Choice

What's the definition of x-intercept?

• Where the graph crosses the x axis
• where the graph crosses the y axis

Multiple Select

How many points do you need to graph a linear equation?

• 0

• 1

• 2

• 3

• Too many!

REMEMBER!

It is ALWAYS

(x , y)

Multiple Choice

_{What is the y-intercept of the line?}

•  (0,¹/₂)
• (0,1)
• (0, ^-1/2)
• (0, -1)

Multiple Choice

What are the x- and y- intercepts, respectively, on this graph?

• (0,5), (0,5)
• (5,0), (5,0)
• (5,0), (0,5)
• (0,0), (5,0)

So how do I graph with just the intercepts?

The next two slides are a reminder!

How to find the x intercept.

• Write equation.

• Substitute zero for y.

• Solve for x

• Write coordinate. (x,0)

How to find the y intercept.

• Write equation.

• Substitute zero for x.

• Solve for y.

• Write coordinate. (0,y)

Multiple Choice

Give the x-intercept
3x + 8y = 24

• (8, 0)
• (0, 8)
• (3, 0)
• (0, 3)

Multiple Choice

Give the y-interecept
3x + y = 5

• (-3, 0)
• (0,5)
• (5, 0)
• (0, -3)

Multiple Choice

Name the x- and y-intercepts for the equation:
2x + y = 6

• (0, 3) and (6, 0)
• (0, -3) and (-6, 0)
• (3, 0) and (0, 6)
• (-3, 0) and (0, -6)

Lets start the homework!