X and Y Intercepts
Testing Points
Elimination
Substitution
Miscellaneous
100

When solving for an x or y intercept, what key number do you plug in?

zero

100
How do you test a point in a system?

you plug in the x and y and see if the solution is true.

100

What does the word eliminate mean?

get rid of, cancel, cross out, etc. 

100

How would you solve this set of systems by substitution?

x=5

y=-x+12

plug the 5 into x in the second equation and y=7

(5,7)

100

Why are imaginary numbers called imaginary?

They cannot be seen or graphed on a regular coordinate plane.

200

A x-intercept is where the graph does what? 

crosses the x axis

200

Is (1,1) a solution to the following systems of equations:

y=2x-1

5x-4y=1

yes

200

Solve the set of systems by elimination:

x-5y=-29

9x+5y=-11

(-4,5)

200

Solve the set of systems by substitution:

x=-2

x+3y=4

(-2,2)

200

Is the square root of 32 rational or irrational?

Irrational! It is not a perfect square!

300

A y-intercept is where the graph does what? 

crosses the y-axis

300

Is (3,8) a solution to the following systems of equations:

y=-5x+1

y=3x-2

no

300

Solve the set of systems by elimination:

4x-2y=-8

4x-9y=20

(-4,-4)

300

Solve the set of systems by substitution:

y=-3x

4x-2y=-20

(-2,6)

300

Write the slope intercept form of the equation.

slope=-5

y-intercept=5

y=-5x+5

400

solve for both the x and y intercepts of this equation: 

x+5y=5

x=5

y=1

400

Is (0,1) a solution to the following systems of equations:

-5y=-5

6x+7y=7

yes

400

Solve the set of systems by elimination:

8x+10y=16

-4x+y=16

(-3,4)

400

Solve the set of systems by substitution:

y=-3x+4

y=4x-10

(2,-2)
400

Are the points (3, 4), (5, 6), and (7, 8) collinear?

Yes! They are on the line y = x + 1.

500

solve for both the x an y intercepts of this equation: 3x-5y=15

x=5

y=-3

500

Is (10,10) a solution to the following systems of equations:

y=-8x-3

x+y=7

no

500

Solve the set of systems by elimination:

-3x-3y=3

-5x+2y=19


(-3,2)

500

Solve the set of systems by substitution:

x=3y+6

2x-4y=12

(6,0)

500

Find the radius of a circle with the end points (3, 6) and (-1, 4).

Square Root of 5 (about 2.24)

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