Intercepts, Slope and Slope-Intercept Form

Intercepts, Slope and Slope-Intercept Form

Each question on this Quizizz Review is followed by the complete solution. Check your answers.

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Multiple Choice

What are the x and y intercepts of 2x + 4y = 8?

Remember, two intercepts mean two points in the answer

• (4,0) and (2,0)

• (2,0) and (4,0)

• (4,0) and (0,2)

• (0,4) and (2,0)

Cover up method is shown here

You could also choose to use the original equation and set one variable equal to zero

Graph 3x + 2y = 12

using x- and y-intercept

x- and y- intercepts found and then plotted on their respective axises

The intercepts were found by setting one variable equal to 0 but the cover up method is within there starting at the 3rd line

Multiple Choice

What type of slope does the line have

• positive

• negative

• zero

• undefined

Multiple Choice

What type of slope does the line have

• positive

• negative

• zero

• undefined

Multiple Choice

What type of slope does the line have

• positive

• negative

• zero

• undefined

Multiple Choice

What type of slope does the line have

• positive

• negative

• zero

• undefined

Fill in the Blank

Find the slope of the graph

Use any two points to find the rise and run - you may need to simplify

Here the up 1 is +1 and right 3 is +3 so the rise over run is 1/3

Fill in the Blank

Find the slope of the line using the slope formula

(x₁,y₁) and (x₂, y₂) were labeled in the graph

You can use any two points that are on the line

Be careful with those negative signs!

Multiple Choice

What is the slope of y = 5x - 8?

• 5

• -8

• 8

Multiple Choice

What is the y-intercept of y = 5x - 8?

• 5

• -8

• 8

y = mx + b

m is slope

b is the y-intercept

Multiple Choice

How would you move from one point to another with a slope of -2/3

• down 2 left 3

• right 2 down 3

• down 2 right 3

Multiple Choice

How do you move from one point to another with a slope of 4?

Hint: slope must be a fraction for rise over run

4 can also be written as 4/1

• up 4 right 1

• up 1 right 4

Positive rise is up and negative rise is down

positive run is right

negative run is left

It is easiest to always apply a negative sign to the rise so then you are always moving right for run

Graph the line y = -1/2x - 4

using the slope-intercept method

You begin on the y-axis at -4 since this is your b

slope tells you how to move to the next point (see picture)

Multiple Choice

What is the slope of the line that is parallel to y = 3/5x + 5

• 3/5

• -3/5

• 5/3

• -5/3

Multiple Choice

What is the slope of the line that is perpendicular to y = 1/3x + 5

• 1/3

• -1/3

• 3/1

• -3/1

To find a perpendicular slope you flip the fraction and change the sign

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