CC3 Chapter 5 Study Guide

1) Solve for y

• y = -9x + 7

• y = 9x + 7

• y = 9x - 7

• Impossible to solve for y.

2) Solve for y

• y = -1/2x + 3

• 3y = -6x + 9

• y = -2x + 3

• y = 2x + 3

3) Before solving the equation in problem #3, what number could you multiply the equation by to BUST the fraction?

• 3

• 2

• 17

• None of the above

3) Bust the fraction in problem #3 by multiplying the whole equation by 3. What is the NEW equation after busting the fraction?

• x + 6 = 51

• x + 6 = 17

• 3x + 6 = 17

• x + 2 = 17

3) Solve the equation for x. Just type the number.

4) Before solving the equation in problem #4, what number could you multiply the equation by to BUST the fraction?

• 12

• 4

• 3

• 1

4) After busting your equation by multiplying everything by 12, what is your new equation?

• 3x + 4x = 12

• 3x + 4x = 1

• 12x + 12x = 12

• Not possible

4) Solve for x.

• x = 7

• x = 12/7

• x = 7/12

• x = 12

5) Is (3,10) the solution to following system of equations? (3, 10) is an (x,y) pair, so plug (3,10) into x and y for BOTH equations. Does it make BOTH equations true?

• Yes

• No, it only makes the first equation true.

• No, it only makes the second equation true.

• No, it doesn't make either equation true.

6) Don't forget, when you are graphing the equations, the number stuck to x is your GROWTH and the other number is your Figure 0 (y-intercept). After graphing the 2 equations, at one point do they intersect?

• (-1,1)

• (-4,-4)

• They do not intersect

• (1, -1)